id stringlengths 27 136 | text stringlengths 4 1.05M |
|---|---|
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_16737 | # If $A(z_1)$ and $(z_2)$ are two points in argand plane, find $\angle ABO$
If $A(z_1)$ and $(z_2)$ are two points in argand(complex) plane such that $$\frac{z_1}{z_2}+\frac{\overline{z_1}}{\overline{z_2}}=2$$. Find the value of $\angle ABO$ where $O$ is origin.
Using given condition, I found that Real part of $\frac... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_16738 | # How do you find the midpoint of C (2,9) D (-2,-9)?
Mar 8, 2018
See below
#### Explanation:
The general formula for midpoint M between C and D is
$M \left({m}_{1} , {m}_{2}\right) = \left(\frac{{c}_{1} + {d}_{1}}{2} , \frac{{c}_{2} + {d}_{2}}{2}\right) = \left(\frac{2 + \left(- 2\right)}{2} , \frac{9 + \left(- 9\... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_16739 | # Category:Cartesian Product
Let $S$ and $T$ be sets.
The cartesian product $S \times T$ of $S$ and $T$ is the set of ordered pairs $\tuple {x, y}$ with $x \in S$ and $y \in T$:
$S \times T = \set {\tuple {x, y}: x \in S \land y \in T}$ |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_16740 | # Multivariable calculus: constant curvature
1. May 20, 2013
### Nikitin
If the curvature is always constant and >0 for a parametrized curve C, does it automatically mean the curve is a circle?
2. May 20, 2013
### WannabeNewton
No. Let $\gamma:\mathbb{R}\rightarrow \mathbb{R}^{3}$ be the regular curve given by $\... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_16741 | Home > Standard Error > Calculating Standard Error Of Difference Between Means
# Calculating Standard Error Of Difference Between Means
The sampling distribution of the difference between two sample means are determined by a corollary of the Central Limit Theorem. The formula looks easier without the notation and the... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_16743 | # Math Help - Standard form problem
1. ## Standard form problem
Hi
This is probably easy but I just can't see it.
I have a question which states 200KN as 200 x 106 N (6 should be raised, but I couldn't do it. ie. 6 decimal places.)
How is this right, I see it as 200KN = 200000 = 200 X 103 N (sorry, 3 should be rais... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_16744 | # Consider two products, A and B, both of which have the same purchase probability
Consider two products, A and B, both of which have the same purchase probability.
Product A has a population size of 1000 and a 50 percent awareness probability. Product B has a population size of 10,000 and a 5 percent awareness probab... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_16745 | How to solve differential equation dy/dx = k(c - y)?
Just wondering how you would solve this kind of a differential equation.
Relevance
• Niall
Lv 7
6 years ago
Assuming that k and c are just constants, the equation is separable, divide both sides by (c - y) and multiply the differential across:
1/(c - y) * dy = k ... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_16746 | # How do you solve (x+5)(x-2)>=0?
###### Question:
How do you solve (x+5)(x-2)>=0?
#### Similar Solved Questions
##### 2. The following is a partial list of business transactions for Ortega Consulting Company. They all...
2. The following is a partial list of business transactions for Ortega Consulting Company. The... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_16747 | Show Summary Details
More options …
# Nanophotonics
Editor-in-Chief: Sorger, Volker
12 Issues per year
IMPACT FACTOR 2016: 4.492
5-year IMPACT FACTOR: 5.723
CiteScore 2016: 4.75
CiteScoreTracker 2017: 5.83
In co-publication with Science Wise Publishing
Open Access
Online
ISSN
2192-8614
See all formats and pricin... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_16748 | ×
Get Full Access to College Physics - 1 Edition - Chapter 13 - Problem 40pe
Get Full Access to College Physics - 1 Edition - Chapter 13 - Problem 40pe
×
# Average atomic and molecular speeds (vrms) are large, even
ISBN: 9781938168000 42
## Solution for problem 40PE Chapter 13
College Physics | 1st Edition
• Text... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_16749 | The following information is provided for Kelly Plumbing Supply Cash received from customers during Decenber 2017...
Question:
The following information is provided for Kelly Plumbing Supply Cash received from customers during Decenber 2017 Cash paid to suppliers for inventory during December 2017 . $387,000 131,000 ... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_16751 | # Abstract Algebra – Rings, Integral domains and Fields
Rings, Integral domains and Fields
Here in this post we learn briefly about rings, integral domains and fields in abstract algebra.
Ring
A non-empty set |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_16742 | David Corfield relevance logic
The variable sharing principle says that no formula of the form $A \to B$ can be proven in a relevance logic if $A$ and $B$ do not have at least one propositional variable (sometimes called a proposition letter) in common and that no inference can be shown valid if the premises and concl... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_16750 | OpenStudy (anonymous):
Find the exact solutions in radians: sin3x=1/2
3 years ago
OpenStudy (kainui):
Don't look at it like it's mysterious. You've seen sine of an angle be equal to 1/2 before right? So what angle, when you take the sine of it, gives you 1/2?
3 years ago
OpenStudy (anonymous):
30 degree angle?
3 ... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_12545 | <meta http-equiv="refresh" content="1; url=/nojavascript/"> Distributive Property and Solving for Unknowns | CK-12 Foundation
You are reading an older version of this FlexBook® textbook: Algebra Explorations, Pre-K through Grade 7 Go to the latest version.
# 7.4: Distributive Property and Solving for Unknowns
Created... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_12546 | # Thread: Basis & Dimension Question
1. ## Basis & Dimension Question
Let u and v distinct vectors of a vector space V. Show that if {u,v} is a basis for V and a and b are nonzero scalars, then both {u + v}, au} and {au,bv} are also bases for V.
2. Originally Posted by leungsta
Let u and v distinct vectors of a vect... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_12547 | # All Science Fair Projects
## Science Fair Project Encyclopedia for Schools!
Search Browse Forum Coach Links Editor Help Tell-a-Friend Encyclopedia Dictionary
# Science Fair Project Encyclopedia
For information on any area of science that interests you,
enter a keyword (eg. scientific met... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_12548 | +34 616 71 29 85 carsten@dataz4s.com
Select Page
Statistics helping to Optimize Purchase & Stock
The chain management department of a furniture retail chain works on improving the companyâs purchase and stock logistics. In particular, they want to improve on a few items of relatively high value and large physical v... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_12550 | # Find the equation of the circle that passes through three points.
• January 5th 2010, 07:35 PM
Pre-Calc
Find the equation of the circle that passes through three points.
A ( 3, 1) B ( 2,4) C (-1, 2)
some things that go with this equation
-midpoint
-distance
-perpendicular bisector
-M1-M2= -1
-Simultaneous equation... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_12551 | GMAT Question of the Day - Daily to your Mailbox; hard ones only
It is currently 12 Dec 2019, 20:04
### GMAT Club Daily Prep
#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.
Customize... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_12552 | # Problem 1 The president of Hill Enterprises, Terri Hill, projects the firm's aggregate demand requirements over...
###### Question:
Problem 1 The president of Hill Enterprises, Terri Hill, projects the firm's aggregate demand requirements over the next 8 months as follows: Jan Feb Mar Apr 1,400 1,600 1,800 1,800 Ju... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_12553 | # Sum of Complex Numbers in Exponential Form/General Result
Jump to navigation Jump to search
## Theorem
Let $n \in \Z_{>0}$ be a positive integer.
For all $k \in \set {1, 2, \dotsc, n}$, let:
$z_k = r_k e^{i \theta_k}$
Let:
$r e^{i \theta} = \displaystyle \sum_{k \mathop = 1}^n z_k = z_1 + z_2 + \dotsb + z_k$
... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_12554 | # Motivation for Studying Combinatorics (Middle School Version!)
I'm going to teach very elementary combinatorics (limited to basic enumeration) during two weeks to middle school students. At the beginning, I want to demonstrate the importance of counting in real life or technology using concrete examples which studen... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_12555 | Fuglede's theorem
In mathematics, Fuglede's theorem is a result in operator theory, named after Bent Fuglede.
The result
Theorem (Fuglede) Let T and N be bounded operators on a complex Hilbert space with N being normal. If TN = NT, then TN* = N*T, where N* denotes the adjoint of N.
Normality of N is necessary, as i... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_12556 | ## Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)
$50a^4b^7$
RECALL: (1) $(ab)^m=a^mb^m$ (2) $(a^m)^n=a^{mn}$ Use rule (1) above to obtain: $(2a^2b)(5ab^3)^2 \\=(2a^2b)[5^2a^2(b^3)^2] \\=(2a^2b)[25a^2(b^3)^2]$ Use rule (2) above to obtain: $(2a^2b)[25a^2(b^3)^2] \\=(2a^2b)(25a^2b^{3(2)}) \\... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_12557 | Precalculus (6th Edition) Blitzer
$r=\frac{S-P}{Pt}$ Formula for future value
$S = P + Prt$ $Prt=S-P$ $r=\frac{S-P}{Pt}$ |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_12558 | # grinding ball mill machine stone crushers sized
## Ball Mill - Eastman Rock Crusher
Ball mill is a type of grinder machine which uses steel ball as grinding medium, can crush and grind the materials to 35 mesh or finer, adopted in open or close circuit. The feed materials can be dry or wet, they are broken by the f... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_12559 | In the view of statistics, we know everything about a physical system if we know the probability $p(\mathbf s)$ of all possible states of the physical system $\mathbf s$. Time can also be part of the state specification.
As an example, we will classify fruits into oranges and non oranges. We will have the state vector... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_12544 | +0
# Use the Laws of logarithms to rewrite the expression
0
366
1
+81
Use the Laws of logarithms to rewrite the expression
$$\log_5 \sqrt[3]{x^2+18}$$
in a form with no logarithm of a product, quotient or power.
After rewriting we have
$$\log_5 \sqrt[3]{x^2+18}= A \log_5 f(x)$$
with the constant A=
and the func... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_12549 | # Evaluate the limit, if it exists. (If an answer does not exist, enter DNE.) limit as x-->0 absvalue(3x-1)−absvalue(3x+1)/ (x)
You need to evaluate side limits to check if the limit of the function at x=0 exists.
You need to express the absolute values for x>0 and x<0 such that:
`|3x-1| = 3x - 1 if 3x - 1 gt=0 =gt... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_608 | # Integration of quotient
1. Jan 11, 2012
### sharks
The problem statement, all variables and given/known data
$$\int \frac{r^3-r^5}{\sqrt{1-r^2}}\,.dr$$
The attempt at a solution
The presence of $\sqrt{1-r^2}$ suggests that i use the substitution r=sinθ
The integrand becomes: $$\frac{\sin^3\theta-\sin^5\theta}{\... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_609 | You are here: MIMS > EPrints
MIMS EPrints
## 2006.341: Poisson approximations for epidemics with two levels of mixing
2006.341: Frank Ball and Peter Neal (2004) Poisson approximations for epidemics with two levels of mixing. The Annals of Probability, 32 (1B). pp. 1168-1200. ISSN 0091-1798
Full text available as:
... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_610 | GMAT Question of the Day - Daily to your Mailbox; hard ones only
It is currently 11 Dec 2018, 14:34
### GMAT Club Daily Prep
#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.
Customize... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_611 | Cauchy's Conundrums
Calculus Level 4
Let $$C$$ be a contour defined by the function $$\gamma : \left [ 0, 1 \right ] \rightarrow \mathbb{C}, \gamma(t) = e^{4\pi i t} + e^{8\pi i t}$$
Then evaluate $$\LARGE{\oint_\gamma z^{3}} \, dz$$.
× |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_612 | ×
How to simplify this Cosecant identities?
How to find the value of this equation? I've tried about the multiplication and addition of sine and cosine, but it still useless, and I always ended up with the sin 10 at the end.
Note by Leonardo Chandra
3 years, 10 months ago
Comments
Sort by:
Top Newest
Recall the ... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_613 | 5 edited body
$\bullet$ The sign switch is familiar from complex numbers:
The regular representation of $\mathbb{C}$ over $\mathbb{R}$ is the embedding of $\mathbb{R}$-algebras $\mathbb{C} \to M_2(\mathbb{R})$ defined by $a+ib \mapsto \begin{pmatrix} a & -b \\ b & a \end{pmatrix}$. The inverse of $a+ib$ is the conjug... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_614 | # How do you convert -3-3i to polar form?
In polar form the equation is $Z = 3 \sqrt{2} \left(\cos 225 + i \sin 225\right)$
Let Z= -3 -3i ; Modulas $Z : r = \sqrt{{\left(- 3\right)}^{2} + {\left(- 3\right)}^{2}} = 3 \sqrt{2}$
Argument Z; theta = 180^0 + tan^-1(3/3) = 180+45=225^0 (180^0 added as the point lies in 3rd ... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_615 | # 8.2: Creation and Annihilation Operators
The second, and particularly powerful way to implement the description of identical particles is via creation and annihilation operators. To see how this description arises, consider some single-particle Hermitian operator $$A$$ with eigenvalues $$a_{j}$$. On physical ground... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_617 | GMAT Question of the Day - Daily to your Mailbox; hard ones only
It is currently 11 Nov 2019, 15:01
### GMAT Club Daily Prep
#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.
Customize... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_618 | ## Main
After a novel strain of coronavirus, SARS-CoV-2, was identified in Wuhan (Hubei), China1,2, an exponentially growing number of patients in mainland China were diagnosed with COVID-19, prompting Chinese authorities to introduce radical measures to contain the outbreak3. Despite these measures, a COVID-19 pandem... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_619 | # How do you solve 7absn=56?
Jan 7, 2017
See full solution explanation below
#### Explanation:
First, we need to isolate the absolute value term by dividing each side of the equation by $\textcolor{red}{7}$ which also keeps the equation balanced:
$\frac{7 \left\mid n \right\mid}{\textcolor{red}{7}} = \frac{56}{\te... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_620 | # Problem
• Jul 5th 2006, 05:20 AM
sstr
Problem
Let a and b be positive real numbers such that
a^2 + b^2 = 1
Prove that
a^4 + b^4 is greater than or equal to 0.5
Would someone be so kind as to point me in the right direction?
P.S. Don't give me the answer just yet. I want to see if I can do it alone. Just give me ... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_621 | ## anonymous 5 years ago Find the value of x. log1/2(1/4) = x
1. anonymous
x =2
2. anonymous
$log_{\frac{1}{2}}(\frac{1}{4})=x$ means $(\frac{1}{2})^x=\frac{1}{4}$ and since $\sqrt{\frac{1}{4}}=(\frac{1}{4})^{\frac{1}{2}}$, $x=\frac{1}{2}$
3. anonymous
oops i meant since $(\frac{1}{2})^2=\frac{1}{4}$ $x=2$ |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_622 | # If $Z=X$ on $A$ and $Z=Y$ on $A^c$ then $Z$ is a random variable
Let $X$ and $Y$ be random random variables and let $A \in \mathcal{B}$. Prove that the function $Z$ defined by $$Z(\omega)=\begin{cases} X(\omega),& \text{ if } \omega \in A \\ Y(\omega),& \text{ if } \omega \in A^{c} \end{cases}$$ is a random variable... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_616 | ## experimentX For $$a, b, c > 0, abc =1$$ show that $\frac{a}{b}+\frac{b}{c}+\frac{c}{a}\ge a+b+c$ No Lagrange multiplier allowed. one year ago one year ago
1. Aryang
*
2. completeidiot
$a^2c+ab^2+bc^2\ge a+b+c$
3. experimentX
another form would be it. or $\frac{ab^2+bc^2+ca^2}{a+b+c} \ge 1$
4. experimentX
mos... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_623 | 1. ## Geometry: Triangles
Here are the two questions:
http://img38.imageshack.us/i/mathhomework.jpg/
It's 8th grade math so I'm hoping it isn't too difficult, it's actually only the second one but I need the first to see if I got it correct.
2. 1
the area of the triangle is 4*3/2=6 which is base times height.
now t... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_17681 | Issue No. 02 - Feb. (2017 vol. 39)
ISSN: 0162-8828
pp: 227-241
Tongliang Liu , Centre for Quantum Computation & Intelligent Systems and the Faculty of Engineering and Information Technology, University of Technology Sydney, 81 Broadway Street, Ultimo, NSW, Australia
Dacheng Tao , Centre for Quantum Computation & Intell... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_17682 | # Homework Help: What to take as p(x,y) and q(x,y) with partials
1. Oct 3, 2006
### prace
http://album6.snapandshare.com/3936/45466/845529.jpg [Broken]
Last edited by a moderator: May 2, 2017
2. Oct 4, 2006
### Fermat
Your DE is P(x,y)dx + Q(x,y)dy = 0 and you want to find out if it is exact.
The equation will b... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_17684 | - Current Issue - Ahead of Print Articles - All Issues - Search - Open Access - Information for Authors - Downloads - Guideline - Regulations ㆍPaper Submission ㆍPaper Reviewing ㆍPublication and Distribution - Code of Ethics - For Authors ㆍOnline Submission ㆍMy Manuscript - For Reviewers - For Editors
<< Previous Issue... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_17686 | ## anonymous one year ago how do i simplify this?
1. anonymous
Simplify what?
2. anonymous
$\frac{ x ^{1/4} }{ x ^{1/14} }$
3. anonymous
@perl can you please use complete sentences so i can understand to do it because i have more expressions like these i need to simplify
4. anonymous
Or you can get rid of the f... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_17688 | g02 Chapter Contents
g02 Chapter Introduction
NAG C Library Manual
# NAG Library Function Documentnag_robust_m_regsn_param_var (g02hfc)
## 1 Purpose
nag_robust_m_regsn_param_var (g02hfc) calculates an estimate of the asymptotic variance-covariance matrix for the bounded influence regression estimates (M-estimates).... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_17689 | Thread: Derivatives of (e.g.) functions between matrices
1. Derivatives of (e.g.) functions between matrices
Hi there all,
I've been doing some work to try and keep myself sharp over the holidays but I've reached a point where I'm doing maths I have no notes for, and one particular topic has me completely stuffed - ... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_17690 | # I would like to have a counter example that Peano's theorem does not apply to spaces with infinite dimension
Does Peano's theorem apply to spaces with infinite dimension? Or is there a counterexample?
Here, Peano's theorem is:
Let $E$ be a space with finite dimension. Consider a point $(t_0,x_0) \in \Re \times E$,... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_17691 | ## xbrittxcheerx92x Group Title Simplify and write answer in exponential form: 3^3 + 2 • 3^3 one year ago one year ago
1. Kitt020912 Group Title
$3\times3\times3+2\times3\times3\times3$
2. xbrittxcheerx92x Group Title
My professor's answer was 3 x 3^3 but idk how she got that
3. tkhunny Group Title
Factor this: A... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_17692 | # Tag Info
-2
Integration by parts substitute $e^x+1=u$ $e^x dx = du$ it'll be simple by using Integration by parts
0
$$\int e^{2x} \sqrt{e^x+1}dx=\int (e^x\sqrt{e^x+1})e^xdx$$ $e^x+1=t,e^xdx=dt,e^x=t-1$ $$\int e^{2x}\sqrt{e^x+1}dx=\int(t-1)\sqrt tdt=\int t^{3/2}dt-\int t^{1/2}dt=$$ $$=\frac{t^{3/2+1}}{3/2+1}-\frac... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_17694 | Mass fraction in a mixture of metal salts given the total mass of the metal
I am trying to solve a question in my study and I don't get the answer required.
A mixture of $$\ce{NaNO3}$$ and $$\ce{Na2SO4}$$ weight $$5.37$$ grams, the $$\ce{Na}$$ = $$1.61$$ grams. What is the percentage mass of the $$\ce{NaNO3}$$ in the... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_17695 | # Thread: mountain angle and kinetic energy theorem
1. ## mountain angle and kinetic energy theorem
An extreme skier, starting from rest, coasts down a mountain that makes an angle 25.0° with the horizontal.
The coefficient of kinetic friction between her skis and the snow is 0.200.
She coasts for a distance of 12.3... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_17680 | ## The least value of the expression x^2 + 4y^2 + 3z^2 – 2x – 12y – 6z + 14 is
Q : The least value of the expression x2 + 4y2 + 3z2 – 2x – 12y – 6z + 14 is
(A) 0
(B) 1
(C) no least value
(D) none of these
Ans: (B)
Sol. Let f(x, y, z) = x2 + 4y2 + 3z2 – 2x –12y – 6z + 14
= (x – 1)2 + (2y – 3)2 + 3(z – 1)2 + 1
F... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_17683 | # If $G = \{\sigma \in S_n\mid \epsilon(\sigma) = 1\}$ then is $(G,\ast)$ a group?
Let $G = \{\sigma \in S_n\mid \epsilon(\sigma) = 1\}$ with some $n\in\mathbb{N}$, $\ast$ is the multiplication (i.e. composition) of permutations. Is $(G,\ast)$ a group?
I have some questions when proving it. For example, first of all ... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_17685 | +0
# hello
0
69
1
formula for surface area of a triangular prism?
Guest Apr 27, 2017
Sort:
#1
+6765
0
Let a, b, c be the lengths of sides of the base and h be the height of the prism.
Total surface area
$$2\left(\sqrt{\dfrac{a+b+c}{2}\left(\dfrac{b+c-a}{2}\right)\left(\dfrac{a-b+c}{2}\right)\left(\dfrac{a+b-c}{... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_17687 | Wilga Specific Example Of A First Order Recurrence Relation In Economics
Persistent Stress as a Predictor of Genital Herpes Recurrence
recurrence relation planetmath.org
Recurrence Relation pt.scribd.com. ... refers to a specific type of recurrence relation. used to refer to any recurrence relation. An example of a ... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_17693 | # Minesing Give 3 Example Of Homogeneous
### Give 3 Examples Of Homogeneous Mixtures fullexams.com
Define homogeneous mixtures and give three examples. Elements, Mixtures and Compounds are the names of types Homogeneous Mixtures - in which the two or more substances that form the mixture are Example 3, In this sectio... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_14896 | # The Unapologetic Mathematician
## Properties of Irreducible Root Systems I
Now we can turn towards the project of classifying irreducible root systems up to isomorphism. And we start with some properties of irreducible root systems.
First off, remember a root system $\Phi$ is reducible if we can write it as the di... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_14897 | Browse Questions
Create printable tests and worksheets from Exponents questions. Select questions to add to a test using the checkbox above each question. Remember to click the add selected questions to a test button before moving to another page.
The Exponents questions below are in the following grade levels:
Grade... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_14899 | # Show the divisibility of $(a^m-b^m)|(a^n-b^n)$
This is my first Question here so i hope i am not doing that many mistakes. I am currently still at school and soon i would be able to study. Still i am interested in doing some basic proofs. I checked if there is a similiar Question asked yet but i couldn´t find any.
... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_14900 | ### Theory:
Let us look at our surroundings for a moment. We see glass tumblers, buckets, traffic cones in our day to day life. Do you know what shape is these all? If your answer is a cone, then it is wrong.
The shape resembling in the above pictures is called the frustum of a cone.
If a smaller end of the cone is s... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_14901 | GMAT Question of the Day - Daily to your Mailbox; hard ones only
It is currently 20 Aug 2019, 19:50
### GMAT Club Daily Prep
#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.
Customize... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_14902 | # How do you find the asymptotes for f(x)=x/(4x^2+7x-2)?
Mar 21, 2016
#### Answer:
vertical asymptotes , x = -2 , $x = \frac{1}{4}$
horizontal asymptote y = 0
#### Explanation:
Vertical asymptotes occur when the denominator of a rational function tends to zero. To find the equation/s let the denominator equal zero... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_14903 | ### Home > MC2 > Chapter 6 > Lesson 6.1.4 > Problem6-40
6-40.
Copy and complete each of the Diamond Problems below. The pattern used in the Diamond Problems is shown at right.
1. Converting the mixed number into a fraction greater than one may prove to be helpful.
$\left(\frac{6}{5}\right)\left(\frac{3}{4}\right) =... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_14904 | # Q : 5 In Fig.$\small 9.33$, ABC and BDE are two equilateral triangles such that D is the mid-point of BC. If AE intersects BC at F, show that (v) $\small ar(BFE)=2ar(FED)$[Hint : Join EC and AD. Show that $\small BE\parallel AC$ and $\small DE\parallel AB$, etc.]
M manish painkra
In right angled triangle $... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_14905 | Browse Questions
# Average velocity of the molecules of a gas in a container moving in one dimension is
$(a)\;Zero\qquad(b)\;Positive\qquad(c)\;Negative\qquad(d)\;\sqrt{\large\frac{8RT}{\pi m}}$
The average velocity of gas molecules in a container moving in one direction is zero , otherwise all molecules will be col... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_14907 | # JEE Coordinate (1)
Geometry Level 4
An ellipse has foci at $(9,20)$ and $(49,55)$ in the $xy$ plane and is tangent to the $x$-axis.
If length of its major axis is $A$, report the answer closest integer to $\sqrt A$.
###### This is a part of my set Practice for JEE 2017!
×
Problem Loading...
Note Loading...
Set... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_14908 | Browse Questions
# The circumference of a circle is measured as 56 cm with an error 0.02 cm. The percentage error in its area is
$\begin {array} {1 1} (a)\;\frac{1}{7} & \quad (b)\;\frac{1}{28} \\ (c)\;\frac{1}{14} & \quad (d)\;\frac{1}{56} \end {array}$
$(c)\;\frac{1}{14}$ |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_14909 | I am looking for an easy proof that the adjoint of a compact operator on a Hilbert space is again compact. This makes the big characterization theorem for compact operators (i.e. compact iff image of unit ball is relatively compact iff image of unit ball is compact iff norm limit of finite rank operators) much easier t... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_14910 | # A jeweler has five rings, each weighing 18g, made of 5% silver and 95% gold. He decides to melt down the rings and add enough silver to reduce the gold content to 75%. How much silver should he add?
Apr 15, 2016
Detailed explanation
#### Explanation:
Targeting silver content as the means of determining the blend ... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_14911 | # Quiz Chapter 11.05: Informal Development of Fast Fourier Transform
MULTIPLE CHOICE TEST INFORMAL DEVELOPMENT OF FAST FOURIER TRANSFORM FAST FOURIER TRANSFORMS
1. Using the definition $W=e^{-i (2 \pi / N)}$, and the Euler identity $e^{\pm i \theta}= \cos (\theta) \pm i \sin (\theta)$, the value of $W^{(N / 6)}$ can... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_14898 | # Update on the Calculus Tree
Recall in the post The Calculus Tree we had defined
Definition 3. A function $f$ is cyclic if $f^{(n)}=f$ for some nonzero finite number $n.$ The number $n$ is called the differential order of $f,$ and is denoted $ord(f).$ If a function is not cyclic we say $ord(f)=\infty$ (note in th... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_14906 | # Proving subsets are subrings
Establish, whether or not following subsets of given rings are subrings
1. All polynomials $f(x)$ with $f(0)=9$ in $\mathbb{Z}[x]$.
These are past paper questions, I have no clue what $\mathbb{Z}[x]$ is, can anyone give me some help please. There are also two more questions:
Establish... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_9888 | # Pressure, Buoyant Force problem
1. ### ChunkymonkeyI
35
1. The problem statement, all variables and given/known data
A cube of metal(density=6.00 kg/dm^3) has a cavity inside it. It weighs 2.40 times as much in air as it does when completely submerged in water. What fraction of the cube's volume is the cavity?
2. R... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_9889 | # trace of matrix product
For positive definite matrices $A$ and $C$, positive semidefinite matrices $B$ and $D$. Note that $A=(B+D+eI)^{-1}$, $C=(B+D+fI)^{-1}$ where $I$ is the identity matrix, $e$ and $f$ are postive numbers. It is obvious that under this setting $tr\{BD\}=0$ implies $tr\{ABCD\}=0$. However I want t... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_9892 | # nLab cokernel pair
category theory
## Applications
#### Limits and colimits
limits and colimits
# Contents
## Idea
The cokernel pair of a morphism in a category is the pushout of the morphism along itself.
The dual notion is that of kernel pair.
Created on October 8, 2010 07:35:19 by Urs Schreiber (87.212.20... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_9893 | ## Posts Tagged ‘comparison’
### Problem 25 – More Fibonacci Numbers
September 19, 2009
In problem 25 we are asked to find the first Fibonacci number with a given number of digits. Actually, we are only asked to find which Fibonacci number it is (its index in the sequence of Fibonacci numbers), instead of the number... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_9894 | Please Help! - XP Math - Forums
Sign Up FREE! | Sign In | Classroom Setup | Common Core Alignment
XP Math - Forums Please Help!
User Name Remember Me? Password
Register Arcade Members List Mark Forums Read Experience
Thread Tools Display Modes
02-29-2012 #1
Jonathan W
Points: 15,083, Level: 79
Activity: 0%
L... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_9895 | # Metric vs Rondel - What's the difference?
metric | rondel |
## As nouns the difference between metric and rondel
is that metric is a measure for something; a means of deriving a quantitative measurement or approximation for otherwise qualitative phenomena (especially used in software engineering) while rondel is a... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_9896 | scroll identifier for mobile
main-content
## Über dieses Buch
This book constitutes the refereed proceedings of the 22nd International Symposium on String Processing and Information Retrieval, SPIRE 2015, held in London, UK, in September 2015. The 28 full and 6 short papers included in this volume were carefully revi... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_9898 | # Is it possible to have three real numbers that have both their sum and product equal to $1$?
I have to solve $x+y+z=1$ and $xyz=1$ for a set of $(x, y, z)$. Are there any such real numbers?
Edit : What if $x+y+z=xyz=r$, $r$ being an arbitrary real number. Will it still be possible to find real $x$, $y$, $z$?
There... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_9899 | # Hierarchical regression
## Tutorial: Hierarchical regression
In this tutorial we will explore linear regression in combination with hierarchical priors. We will be using data from Gelman and Hill on radon levels found in buildings in Minnesota; Hill J and Gelman A. The original paper about radon concentrations in ... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_9901 | Mathematics
OpenStudy (anonymous):
integral question?!?!?hellpp
OpenStudy (anonymous):
if it is given that $\int\limits_{2}^{4} x ^{3}dx=60 and \int\limits_{2}^{4}xdx=6 and \int\limits_{2}^{4}dx=2$
OpenStudy (anonymous):
if u had 2 find....a.$\int\limits_{2}^{2}x ^{3}dx? and \int\limits_{2}^{4}15dx? and \int\limit... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_9902 | Homework Help: Vectors and Magnitudes
1. Sep 28, 2008
Oblivion77
Hey guys, I am posting this question because I don't know what it is asking of me. Here it is:
Any tips or help would be nice. Thanks.
2. Sep 29, 2008
michalll
You probably have to detemine the i vector component of the astronaut's speed to hit the... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_9890 | # Defining extra boundary conditions for NDSolve?
I have a second order reaction / diffusion type ODE of the form
$\frac{D_{o}}{r^2} \frac{d}{dr}\left(r^2 \frac{dC}{dr} \right) - \frac{aC}{C+k} = 0$
where $a, k$ and $D_{o}$ are constants and $C$ is a function of $r$. I know the following;
$C(r_{o}) = \omega$ , $C(r... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_9897 | Arc-like
Let $(X,\tau)$ be a continuum. We say that $X$ is arc-like if for every $\epsilon > 0$ there exists an onto epsilon map $f \colon X \rightarrow [0,1]$. |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_9903 | # Tag Info
11
A simple way to imagine the effect of the hash function is a truncation. A "good" hash function ought to behave like a random oracle. If your source has entropy $s$ bits, then this means that the source somehow assumes $2^s$ possible values. When processed with a random oracle with an $n$-bit output, yo... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_9891 | Copied to
clipboard
## G = C2×C8⋊D13order 416 = 25·13
### Direct product of C2 and C8⋊D13
Series: Derived Chief Lower central Upper central
Derived series C1 — C26 — C2×C8⋊D13
Chief series C1 — C13 — C26 — C52 — C4×D13 — C2×C4×D13 — C2×C8⋊D13
Lower central C13 — C26 — C2×C8⋊D13
Upper central C1 — C2×C4 — C2×C8
... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_9900 | ## Tuesday, April 12, 2016
### Ralston's Method Controversy
Earlier this semester, I was teaching second-order Runge-Kutta methods, when one of my students, Eitan Lees, noticed that the formulas I wrote down for Ralston's method, was inconsistent with the formula on wikipedia and elsewhere on the web. This form can b... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_7569 | # Thomae's function
Point plot on the interval (0,1). The topmost point in the middle shows f(1/2) = 1/2
Thomae's function, named after Carl Johannes Thomae, has many names: the popcorn function, the raindrop function, the countable cloud function, the modified Dirichlet function, the ruler function,[1] the Riemann f... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_7570 | # Contruction of the Reals?
1. Sep 26, 2005
### Gale
yes... thats possibly the subject of my homework... anyway, i'm gonna try this...
this is the actual assignment:
Homework page
this are the notes from class:
Notes
i don't have a book to work from all i have are these notes, which i also have written in my note... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_7571 | # Tag Info
9
It's state-dependent control flow that's an issue. function f(u) z = 0.0 while z < 10.0 z += u u += z^2 end return u end What's the program for computing the derivative? Automatic differentiation would give you: function f(_u) u = (_u,1.0) # seed the input derivative for the jvp in direction of basis e1 ... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_7572 | Tuesday
September 1, 2015
# Homework Help: Health: Physical Fitness
## Recent Homework Questions About Physical Fitness
Physical Science
How much heat is absorbed by pouring 10 grams of 100°C liquid water on a student’s hand. The water is cooled to body temperature, 37°C. Assume that all of the heat is absorbed by t... |
MathCode-Pile_decontaminated_orig_math-related_devided_processed_train-00003-of-00114-e7fc257ef044bc03_doc_7573 | Clifland
2021-11-06
The Maclaurin series of f(x) if's first four terms should be written out
Bentley Leach
Expert
Maclaurin series:
$f\left(x\right)=\sum _{n=0}^{\mathrm{\infty }}\frac{{f}^{\left(n\right)\left(0\right)}}{n!}{x}^{n}=f\left(0\right)+{f}^{\prime }\left(0\right)x+\frac{f{}^{″}\left(0\right)}{2!}{x}^{2... |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.