question stringlengths 200 50k | answer stringclasses 1
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1+A not invertible implies 1+A^n not invertible? - MathOverflow [closed] most recent 30 from http://mathoverflow.net 2013-05-19T18:03:32Z http://mathoverflow.net/feeds/question/84796 http://www.creativecommons.org/licenses/by-nc/2.5/rdf http://mathoverflow.net/questions/84796/1a-not-invertible-implies-1an-not-invertibl... | open-web-math/open-web-math | |
# 11.2: The Density Curve of a Normal Distribution
$$\newcommand{\vecs}[1]{\overset { \scriptstyle \rightharpoonup} {\mathbf{#1}} }$$
$$\newcommand{\vecd}[1]{\overset{-\!-\!\rightharpoonup}{\vphantom{a}\smash {#1}}}$$
$$\newcommand{\id}{\mathrm{id}}$$ $$\newcommand{\Span}{\mathrm{span}}$$
( \newcommand{\kernel}{\ma... | HuggingFaceTB/finemath | |
Department of Pre-University Education, KarnatakaPUC Karnataka Science Class 12
# Sum: An element with density 2.8 g cm–3 forms a f.c.c. unit cell with edge length 4 x 10–8 cm. Calculate the molar mass of the element. - Chemistry
Sum
An element with density 2.8 g cm–3 forms a f.c.c. unit cell with edge length 4 x 10... | HuggingFaceTB/finemath | |
# Prove that the generators of $\mathbb{Z}_n$ are the integers $r$ such that $0\leq r <n$ and $\gcd(r,n)=1$. [duplicate]
Can someone tell me whether my solution is okay? I based it off a proof for a more general theorem about cyclic groups and generators.
Prove that the generators of $\mathbb{Z}_n$ are the integers $... | open-web-math/open-web-math | |
EnchantedLearning.com is a user-supported site.
As a bonus, site members have access to a banner-ad-free version of the site, with print-friendly pages.
You might also like: Z: Illustrated Math Dictionary - Enchanted Learning.com E: Illustrated Math Dictionary - Enchanted Learning.com X: Illustrated Math Dictionary -... | HuggingFaceTB/finemath | |
## July 29, 2014
### Set Operators in esProc
Since sets are commonly used in esProc, the latter provides comprehensive set operations.
1. Binary Operation on Sets
The most basic set in esProc is sequence. Let’s look at some basic binary operations between two sequences A and B.
• A|B
Concatenate: Concatenate the ... | HuggingFaceTB/finemath | |
How do you differentiate f(x)=xe^x-x using the product rule?
Nov 20, 2015
$f ' \left(x\right) = {e}^{x} + x {e}^{x} - 1$
Explanation:
Let's first examine just the $x {e}^{x}$ portion of this function.
Through the product rule,
$\frac{d}{\mathrm{dx}} \left[x {e}^{x}\right] = \textcolor{b l u e}{\frac{d}{\mathrm{dx}... | HuggingFaceTB/finemath | |
The OEIS is supported by the many generous donors to the OEIS Foundation.
Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
A192351 Coefficient of x in the reduction (by x^2->x+1) of polynomial p(n,x) identified in Comments. 2
0, 1, 2, 20, 56, 320, 1120, 5312, 20608, 90880, 368640, 1577984, 6522... | HuggingFaceTB/finemath | |
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# Differential Equation Assignment Help: How to Learn Differential Equation in Few Simple Steps?
Differential equation is a combination of various variables and its derivatives. It helps to find out the relationship between these variables. It plays a important role in human activity and thus it is necess... | HuggingFaceTB/finemath | |
# Solving a system of first-order partial differential equations (Analytically and Numerically)
I am trying to use Mathematica 10 to solve a system of partial differential equations but I could not. This system has an exact solution and my question is: How do I solve it exactly and numerically if possible?
\begin{ali... | HuggingFaceTB/finemath | |
Tamil Nadu Board of Secondary EducationHSC Commerce Class 11th
# Find y2 for the following function: (iii) x = a cosθ, y = a sinθ - Business Mathematics and Statistics
Sum
Find y2 for the following function:
x = a cosθ, y = a sinθ
#### Solution
x = a cos θ, y = a sin θ
"dx"/("d"θ)= a(-sinθ) = -a sinθ …….. (i)
"... | HuggingFaceTB/finemath | |
# Probability. Vocabulary
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## Transcription
1 MAT 142 College Mathematics Probability Module #PM Terri L. Miller & Elizabeth E. K. Jones revised January 5, 2011 Vocabulary In order to discuss probability we will need a fair bit of vocabulary. Probability is a measure... | HuggingFaceTB/finemath | |
## Geometry: Common Core (15th Edition)
Because we know that vertical equations have the same measure, we can write an equation and solve for x. $x+10=4x-35\longrightarrow$ $x+45=4x\longrightarrow$ addition property of equality $45=3x\longrightarrow$ subtraction property of equality $15=x\longrightarrow$ division prop... | HuggingFaceTB/finemath | |
{- |
Description: Fibonacci numbers with matrix exponentiation
Maintainer: dev@chungyc.org
Part of Ninety-Nine Haskell "Problems". Some solutions are in "Solutions.P30".
-}
module Problems.P30 (fibonacci') where
import qualified Solutions.P30 as Solution
{- |
Consider the following matrix equation, where $$F(n)$$ i... | HuggingFaceTB/finemath | |
Find the product. (y3)2 · y7
(y^3)^2 · y^7 = y^6 · y^7 = y^13
Question
Updated 6/27/2014 4:43:47 PM
Rating
3
(y^3)^2 · y^7 = y^6 · y^7 = y^13
Confirmed by yumdrea [6/27/2014 4:54:24 PM]
Questions asked by the same visitor
Simplify -3p3 + 5p + (-2p2) + (-4) - 12p + 5 - (-8p3) answer choices are: A. 1 - 7p - 2p2 + 5p3 B... | HuggingFaceTB/finemath | |
# MATH 204 Dec 2014 Final - CONCORDIA UNIVERSITY Department...
• Test Prep
• 2
• 100% (2) 2 out of 2 people found this document helpful
This preview shows page 1 - 2 out of 2 pages.
CONCORDIA UNIVERSITY Department of Mathematics & Statistics Course Number Section(s) Mathematics 204 A Examination Date Pages Final Dec... | HuggingFaceTB/finemath | |
# EUREKA MATH LESSON 11 HOMEWORK 3.4 - Classy Coin.
Lesson 11 Homework 3 7 Lesson 11: Tessellate to understand perimeter as the boundary of a shape. (Optional.) Name Date 1. Samson tessellates regular hexagons to make the shape below. a. Outline the perimeter of Samson’s new shape with a highlighter. b.
Lesson 1 Home... | HuggingFaceTB/finemath | |
# Continuous function
function with the property of continuity
(Redirected from Continuous)
A mathematical function is called continuous if, roughly said, a small change in the input only causes a small change in the output. If this is not the case, the function is discontinuous. Functions defined on the real numbers... | HuggingFaceTB/finemath | |
# Online photo math
Online photo math can help students to understand the material and improve their grades. We can solving math problem.
## The Best Online photo math
Here, we debate how Online photo math can help students learn Algebra. A factor calculator is a simple online tool that can save you time and hassle ... | HuggingFaceTB/finemath | |
# Positive and zero exponents
## Online Tutoring Is The Easiest, Most Cost-Effective Way For Students To Get The Help They Need Whenever They Need It.
The exponent is the number or value to which a variable or number is raised. The exponent usually written as am. Here ‘a’ is the base value and ‘m’ is the exponent. Th... | HuggingFaceTB/finemath | |
Search a number
67 is a prime number
BaseRepresentation
bin1000011
32111
41003
5232
6151
7124
oct103
974
1067
1161
1257
1352
144b
1547
hex43
• 67 can be written using four 4's:
67 has 2 divisors, whose sum is σ = 68. Its totient is φ = 66.
The previous prime is 61. The next prime is 71. The reversal of 67 is 76.
67... | HuggingFaceTB/finemath | |
How do you find the Taylor polynomial for 1/(2-x)?
Sep 7, 2017
$\frac{1}{2 - x} = {\sum}_{n = 0}^{\infty} {x}^{n} / {2}^{n + 1}$
for $x \in \left(- 2 , 2\right)$.
Explanation:
Note that the sum of a geometric series is:
${\sum}_{n = 0}^{\infty} {q}^{n} = \frac{1}{1 - q}$
for $q \in \left(- 1 , 1\right)$
Write t... | HuggingFaceTB/finemath | |
Share your repls and programming experiences
← Back to all posts
Junge29
Hey! I've been working on this project as an experimentation of turtle, but I figured it was so fun I should post it! Here it is!
Ok, so this is an art game where you can create cool swirly art by telling a turtle what to do! There are several ... | HuggingFaceTB/finemath | |
Subtraction of fractions (unlike denominators)
Activity type: Interactive Activity
Subtraction of fractions (unlike denominators)
Course
Mathematics
Section
Fractions
Outcome
Subtraction of fractions (unlike denominators)
Activity Type
Interactive Activity
Activity ID
28680
Testimonials
What a brilliant site you h... | HuggingFaceTB/finemath | |
Solutions by everydaycalculation.com
1st number: 3 0/2, 2nd number: 2/6
6/2 + 2/6 is 10/3.
1. Find the least common denominator or LCM of the two denominators:
LCM of 2 and 6 is 6
Next, find the equivalent fraction of both fractional numbers with denominator 6
2. For the 1st fraction, since 2 × 3 = 6,
6/2 = 6 × 3/2... | HuggingFaceTB/finemath | |
Recognitions:
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Thermodynamics: DT/DV at constant entropy? (last maxwell relation I haven't figured)
So, until now I know:
(DV/DS)p=(DT/Dp)s=a*T/cp*(rho) (enthalpy)
(Dp/DT)v=(DS/DV)t=-a/k (helmoltz)
(DS/Dp)t=-(DV/DT)p=-Va (gibbs)
a=expansion coefficient
k=isothermal compression coefficent
cp=heat capacity ... | HuggingFaceTB/finemath | |
# How Many Tomatoes Equal a Quart?
There is no standard number of tomatoes that makes a quart. This is subject to the fact that tomatoes come in different sizes and mass. A quart is a unit of volume equal to a quarter of a gallon.
A quart is equivalent to thirty two quarts, and a tomato is usually 8 ounces, therefore ... | HuggingFaceTB/finemath | |
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# If $\large\frac{1}{a},\frac{1}{b},\frac{1}{c}$ are in A.P., then the equation $a(b-c)x^2+b(c-a)x+c(a-b)=0$ has
$\begin{array}{1 1} \text{(A) Real and distinct roots} \\ \text{(B) Real and equal roots} \\ \text{(C) No real roots } \\ \text{(D) cannot... | HuggingFaceTB/finemath | |
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# Diagrammatic Reasoning Tests
• 30 tests |
• 300 questions
A diagrammatic reasoning test is a form of psychometric test consisting of multiple-choice questions based on shapes, patterns and figures. They assess logical reasoning ability by measuring how you can deduce rules from a giv... | HuggingFaceTB/finemath | |
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i have to plot a graph from which i can derive viscosity. the best wa... | HuggingFaceTB/finemath | |
Manfred BörgensMathematics on stamps stamp listprevious stamp main page deutsche Version Guinea-Bissau 1979 Michel 529A Scott 412
Inscribed Angle Theorem
Mathematics on the blackboard: A fine and quite rare theme on stamps. The teacher explains classical theorems in Euclidean plane geometry from Euclid's Elements... | HuggingFaceTB/finemath | |
To install click the Add extension button. That's it.
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Congratulations on this excellent venture… what a great idea!
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# Search by Topic
#### Resources tagged with Visualising similar to Matchsticks:
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### Matchsticks
##### Age 7 to 11 Challenge Level:
Reasoning about the number of matches needed to build squares that share their sides.
### A Square in a Circle
##### Age 7 to 11... | HuggingFaceTB/finemath | |
# Samacheer Kalvi 9th Maths Solutions Chapter 4 Geometry Ex 4.2
## Tamilnadu Samacheer Kalvi 9th Maths Solutions Chapter 4 Geometry Ex 4.2
Question 1.
The angles of a quadrilateral are in the ratio 2 : 4 : 5 : 7. Find all the angles.
Solution:
Let’s call the angles 2x, 4x, 5x, 7x
2x + 4x + 5x + 7x = 360°
18x = 360° A... | HuggingFaceTB/finemath | |
# Inverse trigonometric functions
(Redirected from Inverse sine)
In mathematics, the inverse trigonometric functions (occasionally called cyclometric functions[1]) are the inverse functions of the trigonometric functions (with suitably restricted domains). Specifically, they are the inverses of the sine, cosine, tang... | HuggingFaceTB/finemath | |
# Regression Analysis Step by Step Articles, Videos, Simple Definitions
Regression Analysis Step by Step Articles, Videos, Simple Definitions
## A simple linear regression plot for amount of rain.
Regression analysis will give you an equation for a graph so that you can make predictions regarding the data. As an exa... | HuggingFaceTB/finemath | |
# 求解不含和含雅可比矩阵的非线性方程组
`$\begin{array}{l}F\left(1\right)=1-{x}_{1}\\ F\left(2\right)=10\left({x}_{2}-{x}_{1}^{2}\right)\\ F\left(3\right)=1-{x}_{3}\\ F\left(4\right)=10\left({x}_{4}-{x}_{3}^{2}\right)\\ ⋮\\ F\left(n-1\right)=1-{x}_{n-1}\\ F\left(n\right)=10\left({x}_{n}-{x}_{n-1}^{2}\right).\end{array}$`
`$\begin{array... | HuggingFaceTB/finemath | |
# $E$ outside a Metal Spherric Shell with a off-center Point Charge inside Shell
If a charge +Q is placed inside a metal shell (NOT at the center), as shown below.
I can understand that E will be 0 between inner surface and outer surface due to this is a conductor. Then according to Gauss Law, -Q will be inducted on ... | HuggingFaceTB/finemath | |
# How to Understand the Theory of Relativity Download Article Download Article
When people hear the phrase "Theory of Relativity," they generally think of Albert Einstein and complex mathematical equations like $e=mc^{2}$ . But many scientists played a part in developing the theory. By learning of the history and prac... | HuggingFaceTB/finemath | |
## Monday, April 21, 2014
This week we have to complete our assignment on the topic Adder , Full Adder.. Frankly speaking it is getting more harder now. Me myself trying to get in it.
This is the schematic circuit that I am drawing in the Gateway Silvaco Software. From here we have to run whether our circuit is funct... | HuggingFaceTB/finemath | |
### Mathematics Class XI
Unit-I: Sets and Functions
Chapter 1: Sets
Unit-II: Algebra
Chapter 5: Binomial Theorem
Unit-III: Coordinate Geometry
Chapter 1: Straight Lines
Chapter 2: Conic Sections
Unit-IV: Calculus
Unit-V: Mathematical Reasoning
Unit-VI: Statistics and Probability
Chapter 1: Statistics
Chapter 2: Probab... | HuggingFaceTB/finemath | |
统计代写|多元统计分析代写Multivariate Statistical Analysis代考|Some Small Data Sets
statistics-lab™ 为您的留学生涯保驾护航 在代写多元统计分析Multivariate Statistical Analysis方面已经树立了自己的口碑, 保证靠谱, 高质且原创的统计Statistics代写服务。我们的专家在代写多元统计分析Multivariate Statistical Analysis代写方面经验极为丰富，各种代写多元统计分析Multivariate Statistical Analysis相关的作业也就用不着说。
• Statistical Inferen... | HuggingFaceTB/finemath | |
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Topic: cotpi 69 - Black and white plane
Replies: 26 Last Post: Oct 9, 2013 10:23 AM
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# Solution sets in math..?
What is the solution set?
xy=48
2x-y=-4
What is the solution set?
xy=9
x^2+y^2=82
What is the solution set?
4x^2-5y^2=-16
5x^2-2y^2=13
xy = 48 -(1)
2x - y = -4 -(2)
Add y to each side for the second equation 2x - y = -4
2x - y + y = -4 + y
2x -0 = -4 + y
2x = y - 4
2x + 4 = y - 4... | HuggingFaceTB/finemath | |
Zenfolio | Rick Keller | Derivation of Mathematical Formulas for Exposure Compensation in Close-up Photography
Derivation of Mathematical Formulas for Exposure Compensation in Close-up Photography
Derivation of the Exposure Factor The goal in close-up and macro photography is magnification of a subject. The techni... | HuggingFaceTB/finemath | |
m10 #14 another solution : Retired Discussions [Locked]
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### GMAT Club Daily Prep
#### Thank you for using the timer - this advanced tool can estimate your performance and suggest ... | HuggingFaceTB/finemath | |
## Monday, September 7, 2020
### Half tickets in an infinite lottery
Consider a fair infinite lottery with tickets numbered ..., −3, −2, −1, 0, 1, 2, 3, ..... Consider these events:
• E: winner is even
• O: winner is odd
• E*: winner is even but not zero
• E+: winner is even and positive
• O+: winner is odd and ... | HuggingFaceTB/finemath | |
# Working Principle of Alternator – How Does It Work?
Posted on
How does alternator work? The working principle of alternator is very simple. It is just like basic principle of DC generator. It also depends upon Faraday’s law of electromagnetic induction which says the current is induced in the conductor inside a mag... | HuggingFaceTB/finemath | |
Also known as narcissistic numbers, Armstrong numbers are the sum of their own digits to the power of the number of digits. As that is a slightly brief wording, let me give an example:
153 = 1³ + 5³ + 3³
Each digit is raised to the power three because 153 has three digits. They are totalled and we get the original nu... | HuggingFaceTB/finemath | |
### Home > CC3 > Chapter Ch9 > Lesson 9.1.3 > Problem9-37
9-37.
Joaquin has agreed to lend his younger brother $45$ so that he can buy a new tank for his pet lizard.
1. Joaquin is charging his brother $2\%$ simple interest per month. If his brother pays him back in 6 months, how much will Joaquin get back?
Using th... | HuggingFaceTB/finemath | |
# Bernstein Sets Are Baire Spaces
A topological space $X$ is a Baire space if the intersection of any countable family of open and dense sets in $X$ is dense in $X$ (or equivalently, every nonempty open subset of $X$ is of second category in $X$). One version of the Baire category theorem implies that every complete m... | open-web-math/open-web-math | |
Categories
Resistivity and Conductivity
Experiment shows that the resistance of a metallic conductor is directly proportional to the length of the wire and inversely proportional to the cross sectional area.
i.e, R∝LA∴R=ρLA
Hence, ρ=RAL
Where ρ the constant of the equation called the resistivity, expressed in ohm... | HuggingFaceTB/finemath | |
Mathematics
# Evaluate : $\int { \sqrt { \dfrac { x }{ { x }^{ 3 }{ a }^{ 3 } } } dx }$
##### SOLUTION
Consider the given integral.
$I=\int \sqrt{\dfrac{x}{x^3a^3}}dx$
$I=\int \sqrt{\dfrac{1}{x^2a^3}}dx$
$I={\dfrac{1}{a\sqrt a}}\int \dfrac{1}{x} dx$
$I={\dfrac{1}{a\sqrt a}} log_e x+C$
Its FREE, you're just one step ... | HuggingFaceTB/finemath | |
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# What is a heuristic search?
### Overview
A Best fit search is an informed search strategy that uses domain knowledge and is a also called Heuristic Search. It follows the greedy method strategy.
### What is a heuristic function?
• A Heuristic function is used to... | HuggingFaceTB/finemath | |
### Home > INT2 > Chapter 1 > Lesson 1.3.2 > Problem1-91
1-91.
Rewrite the statements below in conditional (“If …, then …”) form.
Try separating each statement into hypothesis and conclusion.
Rewrite the sentence.
$\text{A Polygon with}\ 3\ \text{sides}$ Make this one separate statement. $\text{is a tri... | HuggingFaceTB/finemath | |
# MECH 0016 finite element analysis
```Module: Finite Element Analysis (MECH 0016)
Level : 3
Session: A & B
Middle East College
```
## Introduction
Gear is basically a toothed wheel. But, it is one of the most important machine elements in mechanical power transmission system. It has a wide range of applications sta... | HuggingFaceTB/finemath | |
# What is the least solution to $2^n \equiv 1 \pmod k$ for a given (odd) $k$?
I came across this problem in a Numberphile video regarding perfect shuffles.
First up, there are no solutions for even $k$. This is made clear from the division algorithm; there are unique $r,s$ such that $2^n = sk + r$ with $r<k$. If $k$ ... | HuggingFaceTB/finemath | |
## A Commentary on “The Kids Are Alright: Divide by n when estimating variance,” by Jeffrey S. Rosenthal, IMS Bulletin (December 2015), Vol. 44, No. 8, Page 9
Dear Editor
Professor Rosenthal’s piece is persuasive and very clearly written. I thank Professor Rosenthal for taking us back to this old concern that never t... | HuggingFaceTB/finemath | |
# Bayes' theorem
(Redirected from Bayes Theorem)
A blue neon sign, showing the simple statement of Bayes' theorem
In probability theory and statistics, Bayes' theorem (alternatively Bayes' law or Bayes' rule) describes the probability of an event, based on conditions that might be related to the event. For example, s... | HuggingFaceTB/finemath | |
# Calculus Logarithmic Differentiation
Printable View
• Jan 28th 2009, 05:07 PM
SoYah
Calculus Logarithmic Differentiation
Let y=x^(cos x). Use logarithmic differentiation to find dy/dx.
• Jan 28th 2009, 05:42 PM
Mush
Quote:
Originally Posted by SoYah
Let y=x^(cos x). Use logarithmic differentiation to find dy/dx.
... | HuggingFaceTB/finemath | |
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Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
A256136 a(n) = 6^A000120(n). 2
1, 6, 6, 36, 6, 36, 36, 216, 6, 36, 36, 216, 36, 216, 216, 1296, 6, 36, 36, 216, 36, 216, 216, 1296, 36, 216, 216, 1296, 216, 1296, 1296, 7776, 6, 36, 36, ... | HuggingFaceTB/finemath | |
# Rain
Garden shape of a rectangle measuring 15 m and 20 m rained water up to 3 mm. How many liters of water rained on the garden?
Result
V = 900 l
#### Solution:
$a=15 \ \text{m} \ \\ b=20 \ \text{m} \ \\ c=3 \ mm \rightarrow m=3 / 1000 \ m=0.003 \ m \ \\ \ \\ V_{1}=a \cdot \ b \cdot \ c=15 \cdot \ 20 \cdot \ 0.... | HuggingFaceTB/finemath | |
Tanks
Fire tank has cuboid shape with a rectangular floor measuring 13.7 m × 9.8 m. Water depth is 2.4 m. Water was pumped from the tank into barrels with a capacity of 2.7 hl.
How many barrels were used, if the water level in the tank fallen 5 cm? Write the amount of water pumped as percentage.
Result
n = 25
p = ... | HuggingFaceTB/finemath | |
# MCQs for Mathematics Class 9 with Answers Chapter 9 Areas of Parallelogram and Triangle
Students of Class 9 Mathematics should refer to MCQ Questions Class 9 Mathematics Areas of Parallelogram and Triangle with answers provided here which is an important chapter in Class 9 Mathematics NCERT textbook. These MCQ for C... | HuggingFaceTB/finemath | |
# Let's Get Started
Let's explore how to solve quadratic equations by looking at their graphs.
TEKS Standards and Student Expectations
A(1) Mathematical process standards. The student uses mathematical processes to acquire and demonstrate mathematical understanding. The student is expected to:
A(1)(C) select tools,... | HuggingFaceTB/finemath | |
# 48 (number)
← 47 48 49 →
Cardinal forty-eight
Ordinal 48th
(forty-eighth)
Factorization 24× 3
Divisors 1, 2, 3, 4, 6, 8, 12, 16, 24, 48
Roman numeral XLVIII
Binary 1100002
Ternary 12103
Quaternary 3004
Quinary 1435
Senary 1206
Octal 608
Duodecimal 4012
Vigesimal 2820
Base 36 1C36
48 (forty-eight) is the natural nu... | HuggingFaceTB/finemath | |
# 86 is 409 Percent of what?
## 86 is 409 Percent of 21.03
%
86 is 409% of 21.03
Calculation steps:
86 ÷ ( 409 ÷ 100 ) = 21.03
### Calculate 86 is 409 Percent of what?
• F
Formula
86 ÷ ( 409 ÷ 100 )
• 1
Percent to decimal
409 ÷ 100 = 4.09
• 2
86 ÷ 4.09 = 21.03 So 86 is 409% of 21.03
Example | HuggingFaceTB/finemath | |
# Length of the largest substring which have character with frequency greater than or equal to half of the substring
Given a string S consisting of character from ‘a’ to ‘z’. The task is to find the length of the largest substring of S which contains a character whose frequency in the sub-string is greater than or equ... | HuggingFaceTB/finemath | |
Thursday
May 5, 2016
# Homework Help: math
Posted by charlie on Saturday, November 17, 2012 at 8:11am.
A bus stopped at Gulgong, 25% of the passengers got off the bus and 3 new passengers got on. At the next stop,3 quarter of the passengers got off the bus and 11 new passengers got on. The bus then had 17 passengers... | HuggingFaceTB/finemath | |
# Mathematics for Data Scientist # Mathematics for Data Scientist
To excel in the field of data science, especially as a data scientist, I would recommend you have good command over the topics mentioned below. These are the topics from mathematics and statistics. There are many YouTube channels that you can use for th... | HuggingFaceTB/finemath | |
Linear complexity
This subsection summarizes selected results about the linear complexity of sequences. All sequences are assumed to be binary sequences. Notation: s denotes an infinite sequence whose terms are s0, si, s2, • • •; sn denotes a finite sequence of length n whose terms are so, si, • • • , sn_i (see Defin... | HuggingFaceTB/finemath | |
## 162. Find Peak Element
A peak element is an element that is greater than its neighbors.
Given an input array`nums`, where`nums[i] ≠ nums[i+1]`, find a peak element and return its index.
The array may contain multiple peaks, in that case return the index to any one of the peaks is fine.
You may imagine that`nums[... | HuggingFaceTB/finemath | |
# If A and B are symmetric matrices of the same order, prove that AB + BA is symmetric
Latika Leekha
9 years ago
A matrix A is said to be symmetric if A = AT
Now, A and B are symmetric matrices, so we have
A = AT
B = BT
Now consider,
(AB + BA)T = (AB)T + (BA)T
= BTAT + ATBT
= BA + AB
= AB + BA
Hence, the matrix (AB + ... | HuggingFaceTB/finemath | |
# Probability as the degree of rational belief
We would all agree that Newton's law of gravitation4 is more confirmed than the stars as an influence on our character and behaviour. In spite of this it is not easy to quantify such a difference as a degree of confirmation. Similarly, given the relative frequencies of fa... | HuggingFaceTB/finemath | |
# Find the value of $n$ when $5^{2 n} \times 5^{3}=5^{9}$.
Given :
The given expression is $5^{2n} \times 5^3 = 5^9$
To do :
We have to find the value of n.
Solution :
We know that,
$a^m \times a^n=a^{m+n}$
Therefore,
$5^{2n} \times 5^3 = 5^9$
$5^{2n+3} = 5^9$
Comparing the powers on both sides,
$2n+3 = 9$
... | HuggingFaceTB/finemath | |
# Give the reasons for each steps provided to validate the argument
[(P -> Q) and (~R or S) and (P or R)] -> (~Q -> S).
Steps:
1. ~(~Q -> S)
2. ~Q and ~S
3. ~S
4. ~R or S
5. ~R
6. P -> Q
7. ~Q
8. ~P
9. P or R
10. R
11. ~R and R
12. Therefore: ~Q -> S
I believe what they are looking for in this question is which logi... | HuggingFaceTB/finemath | |
posted by .
Rachel loves to color. One of her fat crayons wears down to nothing after 15 hours and her skinny crayon wears down to nothing after 6 hours.. One day she starts coloring at 10:30am with two crayons one fat one skinny with the same height. At what time will the skinny crayon be 1/2 height of fat crayon
• ... | HuggingFaceTB/finemath | |
1. Chapter 15 Class 11 Statistics
2. Serial order wise
3. Miscellaneous
Transcript
Misc 3 The mean and standard deviation of six observations are 8 and 4, respectively. If each observation is multiplied by 3, find the new mean and new standard deviation of the resulting observations. Let the observations be 𝑥1... | HuggingFaceTB/finemath | |
# Worksheet: Motion Induced emf
In this worksheet, we will practice using Faraday’s law and Lenz’s law to calculate the emf induced in a conductor that is moving within a magnetic field.
Q1:
An automobile with a radio antenna of length 1.0 m long travels at 100.0 km/h in a location where Earth’s horizontal magnetic ... | HuggingFaceTB/finemath | |
# Binary to Decimal Converter
Minimum characters limit 10
## Binary to decimal converter
Binary to decimal converter does what we always wanted to do in seconds. It helps in converting binary to decimal in a blink of an eye. Using binary to decimal converter, the conversion of binary to number (base-2 to base-10) is... | HuggingFaceTB/finemath | |
# Least Squares with Non Zero Mean Noise
What happens if the noise has no zero mean? I mean, if the exercise is something like: $$y(k) = A x + \eta(k)$$
When I have zero mean, I start from: $$y = A x$$ $$\Rightarrow \hat{y} = A \hat{x}$$ Using algebra, I to get to this equation: $$A^H y = A^H A \hat{x}$$
But what ha... | HuggingFaceTB/finemath | |
15. Identify a pie chart The main purpose of a pie chart The optimal order of a pie chart Answer practice problems Skills Practiced. Tracing paper may be used. The following table shows the percentage of buyers of six different brands of bathing soaps. 'height' : 600, Pie graphs circle graphs this page has several pie ... | HuggingFaceTB/finemath | |
## distance between two vertices in a random binary tree
For the discussion of math. Duh.
Moderators: gmalivuk, Moderators General, Prelates
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### distance between two vertices in a random binary tree
Consider the following method of creating a random binary tree, ... | HuggingFaceTB/finemath | |
# Menelaus's Theorem
## Theorem
Let $ABC$ be a triangle.
Let points $D, E, F$ lie on lines $BC, AC, AB$ respectively (produced if necessary).
Then $D, E$ and $F$ are collinear if and only if:
$\dfrac {AF} {FB} \cdot \dfrac {BD} {DC} \cdot \dfrac {CE} {EA} = -1$
In the above, the line segments $AF, BD, EA$ are det... | open-web-math/open-web-math | |
+0
# Triangles
0
92
1
How do you find the measure of an angle for a triangle with the sides of 125.1, 73.7 and 80.6?
Jun 25, 2020
#1
0
Use the Law of Cosines to find the angles:
Obtuse scalene triangle.
Sides: a = 125.1 b = 73.7 c = 80.6
Area: T = 2820.592
Perimeter: p = 279.4
Semiperimeter: s = 139.7
Ang... | HuggingFaceTB/finemath | |
# Electric fields- the force exerted on a given charge
• leah3000
In summary, the equation for force in a uniform electric field is F=E/Q, while the equation for the electric field between oppositely charged plates is F=EQ. This is because in a parallel plate capacitor, the electric field is relatively uniform, result... | HuggingFaceTB/finemath | |
Solutions by everydaycalculation.com
## Add 24/3 and 12/9
1st number: 8 0/3, 2nd number: 1 3/9
24/3 + 12/9 is 28/3.
#### Steps for adding fractions
1. Find the least common denominator or LCM of the two denominators:
LCM of 3 and 9 is 9
2. For the 1st fraction, since 3 × 3 = 9,
24/3 = 24 × 3/3 × 3 = 72/9
3. Likewi... | HuggingFaceTB/finemath | |
# Minimizing inversions in an array with a single swap
This was asked in the (very) recently concluded Hackerrank Worldcup. Paraphrased:
Given a permutation $a$ of integers from $1$ to $N$, how can I minimize the number of inversions by a single swap of any two integers?
An inversion is a pair of indices $(i, j)$ su... | HuggingFaceTB/finemath | |
# Minimize cost to convert a given matrix to another by flipping columns and reordering rows
Last Updated : 23 Mar, 2023
Given two binary matrices mat[][] and target[][] of dimensions N * M, the task is to find the minimum cost to convert the matrix mat[][] into target[][] using the following operations:
• Flip a pa... | HuggingFaceTB/finemath | |
# What is Trig identities: Definition and 126 Discussions
In mathematics, trigonometric identities are equalities that involve trigonometric functions and are true for every value of the occurring variables for which both sides of the equality are defined. Geometrically, these are identities involving certain function... | HuggingFaceTB/finemath | |
Community Profile # Tara Sherbondy
Last seen: 26 Tage ago Active since 2022
#### Statistics
• • • #### Content Feed
View by
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Times 2 - START HERE
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...
etwa 2 Monate ago
Solved
Given in... | HuggingFaceTB/finemath | |
# A Box on an Accelerating Truck: Understanding Forces and Friction
What forces are acting on a box placed on the loading platform of a truck that is accelerating? How does the truck's acceleration affect the box, and why does the box not slide back and forth if the acceleration is not too high? How does friction come... | HuggingFaceTB/finemath | |
# Search by Topic
#### Resources tagged with Place value similar to Nim-like Games:
Filter by: Content type:
Stage:
Challenge level:
### There are 76 results
Broad Topics > Numbers and the Number System > Place value
### Always a Multiple?
##### Stage: 3 Challenge Level:
Think of a two digit number, reverse the ... | HuggingFaceTB/finemath | |
## ACHE 3 years ago THREE CHARGES ARE AT THE corners of equilateral triangle.calculate electric feild at left corner charge?
1. henpen
|dw:1349626330386:dw|
2. henpen
|dw:1349626433674:dw|
3. henpen
How would you actually do this? Well, define E2 to be on the x-axis, so $E_{2(x)}=E_2$$E_{2(y)}=0$ And$E_{1(x)}=E_1... | HuggingFaceTB/finemath | |
# Heater and stuff
1. Sep 26, 2004
### questionmaster
A heater has a resistance of 15.0 W. It operates on 120.0 V. What thermal energy is supplied by the heater in 30.0 seconds? Answer must be in Kilo-joules.
Well o_o ..it would be nice if you could try to help me with this question. Since I recently moved from Ger... | HuggingFaceTB/finemath | |
# 61024 (number)
61,024 (sixty-one thousand twenty-four) is an even five-digits composite number following 61023 and preceding 61025. In scientific notation, it is written as 6.1024 × 104. The sum of its digits is 13. It has a total of 6 prime factors and 12 positive divisors. There are 30,496 positive integers (up to... | HuggingFaceTB/finemath | |
ways-to-represent-data-data-and-statistics-6th-grade-khan-academy
# Interactive video lesson plan for: Ways to represent data | Data and statistics | 6th grade | Khan Academy
#### Activity overview:
Here are a few of the many ways to look at data. Which is your favorite?
Practice this lesson yourself on KhanAcademy... | HuggingFaceTB/finemath | |
# 1278305 (number)
1,278,305 (one million two hundred seventy-eight thousand three hundred five) is an odd seven-digits composite number following 1278304 and preceding 1278306. In scientific notation, it is written as 1.278305 × 106. The sum of its digits is 26. It has a total of 3 prime factors and 8 positive diviso... | HuggingFaceTB/finemath | |
12:10 AM
@Phase What question?
@SirCumference lol
@SirCumference GR. He likes GR :P
@ACuriousMind But the only application for GR is astrophysics...
@SirCumference Who said anything about applications?
@ACuriousMind Well then it's just math, not physics...
As an analogy, the main application for number theory is cr... | open-web-math/open-web-math | |
# How To Count Unique Values In Excel
In this tutorial, we will discuss how to count unique values in Excel. This can be useful in a variety of scenarios, such as when you want to analyze your data and extract insights.
## Method 1: Using the COUNTIF function
The COUNTIF function in Excel is used for counting cells ... | HuggingFaceTB/finemath |
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