content string | quality_label int64 | meta string | all-MiniLM-L6-v2_embedding list | doc_id int64 | unique_id string |
|---|---|---|---|---|---|
Pressure Drop, Two-Phase Flow
Interlinking between Articles
Visual Navigation
RelatesLinks
Full Text Article
Pressure drop in two-phase flow is a major design variable, governing the pumping power required to transport two-phase fluids and also governing the recirculation rate in natural circulation
systems. The c... | 4 | [
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exp(3) BSD Library Functions Manual exp(3)
NAME
exp, exp2, expm1 -- exponential functions
SYNOPSIS
#include <math.h>
float
expf(float x);
double
exp(double x);
long double
expl(long double x);
float
exp2f(float x);
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swimming, pool, calculation, evaporation, water, thermal, temperature, humidity, vapor, excel
Swimming pools
Evaporation in the swimming pools in normal activity in kg/h m2
The rate of evaporation in kg/h m2 can be estimated for the swimming pool in normal activity, integrating splashing due to the bathes on the acc... | 4 | [
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Can someone verify/correct this proof?
December 3rd 2009, 04:22 PM #1
Newbie
Joined
Oct 2009
Posts
16
Can someone verify/correct this proof?
Can you conclude that A=B if A,B, and C are sets such that:
A U C = B U C and A intersection C = B intersection C
I know its true but I'm not sure of the p... | 4 | [
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quantitative methods
Details for quantitative methods Advertisement
Property Value
Name: quantitative methods
Price 1.00 USD
Q... | 5 | [
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A
33
THE EQUATION AND GRAPH
OF A STRAIGHT LINE
Solutions to an equation of the first degree
The graph of a first degree equation
Constants versus variables
Section 2: Drawing the graph
The x- and y-intercepts of a graph
The form y = ax.
Vertical and horizontal lines
y = 2x + 6.
That is called an equation of... | 4 | [
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Moscow Mathematical Papyrus
From History of Mathematics
The Moscow Mathematical Papyrus is also called the Golenischev Mathematical Papyrus, after its first owner, Egyptologist Vladimir Goleniščev. The Papyrus dates to the Middle Kingdom, ca. 1700 BCE.
The Moscow papyrus is smaller than the Rhind papyrus, it contains... | 4 | [
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Group Theory
Generators
Theorem: The intersection of subgroups $H_1, H_2, ....$ is a subgroup of each of $H_1, H_2, ...$
We say the elements $g_1,...,g_m$ are independent if none of them can be expressed in terms of the others, that is, $g_i \notin \langle g_1,...,g_{i-1},g_{i+1},...,g_m \rangle$. Clearly every finit... | 4 | [
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Squares and Square Roots in Algebra
You might like to read our Introduction to Squares and Square Roots first, but here is a quick summary:
Squares
To square a n... | 4 | [
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Linear Algebra/Linear Transformations
From Wikibooks, open books for an open world
A linear transformation is an important concept in mathematics because many real world phenomena can be approximated by linear models.
Unlike a linear function, a linear transformation works on vectors as well as numbers.
Motivations ... | 5 | [
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Simple quick question
July 1st 2009, 07:39 AM #1
Newbie
Joined
May 2009
Posts
23
Simple quick question
Samuel has 2 choices of travel routes. The travel time for both routes are normally distributed. The travel time for Route A has a mean of 28 min, and std deviation of 5 min, whereas Route B has
a m... | 4 | [
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Application of Two-Part Statistics for Comparison of Sequence Variant Counts
Abstract
Investigation of microbial communities, particularly human associated communities, is significantly enhanced by the vast amounts of sequence data produced by high throughput sequencing technologies.
However, these data create high-di... | 4 | [
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M
Author
Peter Hachenberger
Introduction
The Minkowski sum of two point sets \( P\) and \( Q\) in \( \mathbb{R}^d\), denoted by \( P \oplus Q\), is defined as the set \( \{p+q:p \in P, q \in Q \}\). Minkowski sums are used in a wide range
of applications such as robot motion planning [3] and computer-aided desig... | 4 | [
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find the number of ways
April 17th 2009, 01:58 AM #1
Newbie
Joined
Apr 2009
Posts
11
find the number of ways
Given a positive number x, find the number of ways in which n positive numbers can be added to get a sum x.
n<=x
example x=8,n=2
answer = 4
The combinations are:
(1,7)
(2... | 4 | [
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equilibrium of forces
December 30th 2008, 04:01 AM #1
Member
Joined
Sep 2008
Posts
239
equilibrium of forces
I know i keep posting these sort of questions, its just not clicked yet.
A particle P is on a horizontal plane. Three horizontal forces of magnitude 7N, 10N and 6N, acting in directions as sh... | 4 | [
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Limits Lesson Plans & Worksheets :: 101 - 120
Limits Teacher Resources
Find Limits educational ideas and activities
Showing 101 - 120 of 18,972 resources
In this limits worksheets, students graph tangent lines and determine the slope of a secant line. This one-page worksheet contains six multi-step problems.
In thi... | 4 | [
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Pre Calculus Lesson Plans & Worksheets | Lesson Planet
Pre-Calculus Teacher Resources
Find Pre Calculus educational ideas and activities
Showing 1 - 20 of 223 resources
Learners identify positive and negative angles using the Unit Circle. In this pre-calculus lesson plan, students identify the different angles on a ... | 4 | [
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33th USA Mathematical Olympiad 2003
Problem A1
Show that for each n we can find an n-digit number with all its digits odd which is divisible by 5^n.
Solution
Induction on n. For n = 1 we have 5. So suppose N works for n. Consider the five n+1 digit numbers 10^n + N, 3·10^n + N, 5·10^n + N, 7·10... | 5 | [
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search results
Expand all Collapse all Results 1 - 5 of 5
1. CMB 2012 (vol 57 pp. 51)
Jordan $*$-Derivations of Finite-Dimensional Semiprime Algebras
In the paper, we characterize Jordan $*$-derivations of a $2$-torsion free, finite-dimensional semiprime algebra $R$ with involution $*$. To be precise, we pro... | 4 | [
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ust
| Build-Your-Own | Main Panel | Dipole Woofer | Crossover/EQ | Supplies |
| System Test | Design Models | Prototypes | Active Filters | Surround | FAQ |
If you consider to build a dipole loudspeaker that uses conventional dynamic drivers, then you need some understanding of the inherent acoustic frequency respons... | 4 | [
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Formula To Calculate Recurring Deposit Interest Formula For Calculating Interest In Recurring Deposit?
Formula for calculating interest in Recurring deposit? - formula to calculate recurring deposit interest
If I were a one-time payment of $ xx.xx each year in the AA and the filing of the complainant to pay interest a... | 5 | [
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Proof That There Are Only Five Platonic Polyhedra
┏━━━━━━━━━━━━━━━━━━━━┓
┃ ┃
... | 4 | [
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Logarithm question
October 1st 2011, 08:59 AM
David Green
Logarithm question
I have a log question which asks me to express the log of a single number?
The examples I have seen are in both decimal answers and fractions, I am wondering what way the answer to a log question should be given?
October 1st 2011,... | 5 | [
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Maple
DEtools[rifsimp] Case Splitting and Related Options
Case Splitting Defined
If an input system is nonlinear with respect to any of its indeterminates (including constants), case splitting may occur.
As an example, consider the ODE in : . rifsimp can only isolate the leading indeterminate u'' when a <> 0... | 4 | [
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Deriving a square root under a square
Suppose that $f(x) = \sqrt{6+\sqrt{8x}}$. Find $f'(x).$ oh man I really need help on this one.
Last edited by pseizure2000; September 28th 2007 at 05:28 PM.
Maybe if the numbers/expressions/surds are shown, your questions can be solved. Two red x's don't help much.
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Quadratic Residues
Let $a \in \mathbb{Z}_n$. We say $a$ is a quadratic residue if there exists some $x$ such that $x^2 = a$. Otherwise $a$ is a quadratic nonresidue.
Efficiently distinguishing a quadratic residue from a nonresidue modulo $N = p q$ for primes $p, q$ is an open problem. This is exploited by several cry... | 4 | [
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relative mass
RELATIVE LENGTH & RELATIVE MASS back to ether back to relative motion back to Einstein back to Time topics
When something is moving past extremely fast, its appearance changes - a full analysis shows the object as rotated and forshortened. The forshortening is easily shown and is called RELATIVISTIC
LENG... | 5 | [
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[SOLVED] evaulating the integral- integration by parts
December 6th 2009, 11:50 AM #1
Member
Joined
Sep 2009
Posts
124
$\int_0^\infty {x\sin (x)\cos (x)dx}<br />$
I tried:
u=xsinx, du=xcox+sinx
v=sinx, dv=cosx
$(x\sin x)(\sin x) - \int {(xcoxs + \sin x)(\sin x)dx} <br />$
$(x\sin x)(\... | 5 | [
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2C Combinations
Suppose that Alice, Betty, Cindy, and Dianne have their own private outdoors club, and that they need to select a president, a secretary, and a treasurer. This problem is a permutation one; they have
to fill a president slot, then a secretary slot, and finally a treasurer slot. As no woman would wish ... | 4 | [
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0.01531982421875,
-0.027587890625,
-0.006561279296875,
0.046875,
0.013427734375,
-0.0529785... | 4,928 | 4928 | |
the math of bokeh
If you don’t know (yet) what bokeh is, check out the
Wikipedia article
. In short, bokeh is the blur (or quality thereof) of out-of-focus regions in a photograph. This post is not about the perceived quality of such blur, but rather of its size. For bokeh, more is
usually better, since it a... | 4 | [
0.014404296875,
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0.034423828125,
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0.07421875,
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-0.0274658203125,
-0.0169677734375,
0.076171875,
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... | 4,929 | 4929 | |
ti
Method 2
(1) Form the matrix and differentiate all entries of the matrix:
(2) Find the cofactor matrix of A (Any element of the minor matrix is the determinant formed by deleting the row and the column that contain the element. The cofactor matrix is formed by multiplying
elements of minor matrix by (-1)^i+j, for ... | 4 | [
-0.0179443359375,
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-0.06103515625,
-0.06591796875,
0.02001953125,
-0.009033203125,
0.00509643... | 4,930 | 4930 | |
Estimating Surface Normals in a PointCloud
Surface normals are important properties of a geometric surface, and are heavily used in many areas such as computer graphics applications, to apply the correct light sources that generate shadings
and other visual effects.
Given a geometric surface, it’s usually trivial to ... | 4 | [
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0.0458984375,
-0.00020... | 4,931 | 4931 | |
Equation of tangent line to following curve.
November 4th 2007, 09:24 AM #1
Newbie
Joined
Nov 2007
Posts
14
Equation of tangent line to following curve.
Find the equation of the tangent lines to the following curve at the indicated point.
y= x / y+a at (0,0)
Thanks.
Is this
$y = \frac{x... | 5 | [
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... | 4,932 | 4932 | |
Why this is a reasonable approximation?
(Original post by gff)
Spoiler:
Show
Can you elaborate on the convergence of this power series you've posted? I don't see how it works out.
I'm pretty sure if you substitute it into the equation then LHS=RHS. I didn't check the convergence of it althou... | 5 | [
-0.09033203125,
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0.0128173828125,
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0.033203125,
0.0201416015625,
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determine approximate percentage error using binomial expansion
February 21st 2009, 04:00 AM #1
The shear stress τ in a shaft of diameter
D under a torque T is given by:
τ = kT
πD^3 .
Determine the approximate percentage error
in calculating τ if T is measured 3% too
small and D 1.5% too la... | 5 | [
0.0167236328125,
0.006072998046875,
0.0732421875,
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0.046875,
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0.0888671875,
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0.047119140625,
-0.000843048095703125,
0.0011138916015625,
0.04541015625,
0.00433349609375,
0.0732... | 4,934 | 4934 | |
First matlab code, working with matrices for linear algebra
Hi all,
This is my VERY first stab at matlab - a question on my linear algebra homework that is requiring its use. As follows:
A graph with ?ve nodes and m directed edges can be described by an m x 2 matrix M by the following rule:
label the edges as 1,2,..... | 4 | [
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-0.029541015625,
-0.040771484375,
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-0.000679016113... | 4,935 | 4935 | |
12 CFR Part 226, Appendix M2 to Part 226 - Sample Calculations of Repayment Disclosures
View PDF at GPO Pt. 226, App. M2
Appendix M2 to Part
226
—Sample Calculations of Repayment Disclosures
The following is an example of how to calculate the minimum payment repayment estimate, the minimum payment total cost estim... | 4 | [
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0.0306396484375,
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0.0057373046875,
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0.125,
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-0.0732421875,
-0.0286865234375,
-0.0107421875,
-0.034423828125,
-0.0125122... | 4,936 | 4936 | |
Determination of n Values
In a previous part of Lesson 2, we learned about a mathematical equation relating the two angles (angles of incidence and refraction) and the indices of refraction of the two materials on each side
of the boundary. The equation is known as the Snell's Law equation and is expressed as follows.
... | 4 | [
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0.08984375,
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... | 4,937 | 4937 | |
Solving Using Substitution
November 29th 2011, 12:31 PM
annon25
Solving Using Substitution
Hey Everyone! I'm going to have a few emergency help questions today and early tomorrow. I have a huge test.(Doh)
My problem right now is solving with substitution, and I am given the following problem to do so with:
... | 4 | [
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-0.06103515625,
0.01977... | 4,938 | 4938 | |
Conditional expectation
October 12th 2009, 11:45 AM
Moo
Conditional expectation
Hi !
Okay, this problem has been bugging me... I guess I have some problems with conditional things :(
Let X and Y two independent rv's, both following a uniform distribution over [0,1]
Define $Z=\max\{0,Y-X\}$
Fin... | 5 | [
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0.07861328125,
-0.0751953125,
-0.1... | 4,939 | 4939 | |
MATLAB
numeric::odesolveGeometric
Numerical solution of an ordinary differential equation on a homogeneous manifold
Use only in the MuPAD Notebook Interface.
This functionality does not run in MATLAB.
Syntax
numeric::odesolveGeometric(f, t[0] .. t, Y[0], <LieGroupAction = LAMBDA>, <method>, <RelativeError = tol>,... | 5 | [
-0.0703125,
-0.01043701171875,
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-0.004638671875,
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-0.0052490234375,
-0.07861328125,
-0.02... | 4,940 | 4940 | |
IntroductionSystem Model and Problem FormulationImproved OMP Algorithm by Iterative Local SearchingOMP Algorithm and DiscussionThe Proposed AlgorithmSimulation ResultsConclusionsConflicts of InterestReferencesFigures
Sensors Sensors 1424-8220 MDPI 10.3390/s130911167 sensors-13-11167 Article High Resolution Direction of... | 4 | [
-0.036865234375,
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0.083984375,
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Proving this line lies on this plane with a specfic equaction
March 29th 2009, 10:16 AM
JohnBlaze
Proving this line lies on this plane with a specfic equaction
Q.Does the line with equation (x, y, z) = (5, -4, 6) + u(1,4,-1) lie in the plane with equation (x, y, z) = (3, 0, 2) + s(1,1,-1) + t(2, -1, 1)? Justify ... | 4 | [
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0.04052734375,
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0.005035400390625,
-0.09130859375,
... | 4,942 | 4942 | |
Immunization problem
August 12th 2012, 09:29 PM #1
Senior Member
Joined
Oct 2009
Posts
295
Thanks
9
Redington immunization problem
A bank is required to pay 1,100 in one year. There are two investment options available with respect to how money can be invested now in order to provide for the 1,100 pa... | 5 | [
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-0.01373291015625,
-0.02075... | 4,943 | 4943 | |
Proofs for Topology
March 17th 2008, 02:59 PM
reagan3nc
Proofs for Topology
Hey I don't know if anyone can help but here goes:I need to proof these 3 statements:
Let X have a discrete topolgy and Y be an arbitrary topological space. Show that every funtion f:X maps to Y is continuous.
Let y have the tr... | 5 | [
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0.0245361328125,
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0.05908203125,
0.0712890625,
0.044677734375,
-0.0295... | 4,944 | 4944 | |
How to integrate this partial differential equation
December 28th 2012, 07:06 AM #1
Junior Member
Joined
Jun 2010
Posts
46
How to integrate this partial differential equation
I have the following equation
$\frac{\partial}{\partial y}\left(m\frac{dy}{dx}\right)=0$
where $y$ is a function of $x$ ... | 5 | [
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0.06201171875,
-0.016967773437... | 4,945 | 4945 | |
Calculus problem with tangents
April 21st 2010, 02:45 AM
Exotique
Calculus problem with tangents
I assume we have to use differentiation to answer this question, since it's what we're learning at the moment, the problem is, I have no idea where to begin with this question...
Consider the curve ${\sqrt{x} + ... | 5 | [
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... | 4,946 | 4946 | |
Need help, quickly. Implicit differtiation
March 4th 2010, 08:01 PM #1
Newbie
Joined
Mar 2010
Posts
9
I have been having trouble with this question. A few people have helped, but I've gotten no where from that. please help!
Question: Show that for the relation ((x/y)^.5) + ((y/x)^.5) = 10, x does not... | 5 | [
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-0.02819... | 4,947 | 4947 | |
Semi Linear PDE
February 14th 2011, 06:39 AM #1
Semi Linear PDE
$<br /> \displaystyle -2xy \frac{\partial u}{\partial x} +4x \frac{\partial u}{\partial y}=4xy-yu<br />$.
$u(x,0)=2 \sqrt x$
$<br /> \displaystyle \frac{dy}{dx}=\frac{4x}{-2xy}=\frac{-2}{y} \implies \frac{y^2}{2}=-2x+k<br />$
$<br /> \... | 5 | [
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0.03125,
-0.0... | 4,948 | 4948 | |
General solution...
May 28th 2009, 06:48 PM #1
Junior Member
Joined
May 2009
Posts
34
General solution...
can someone help me get the general solution for this..I get confused about the derivative of x
9d^2x/dt^2+6dx/dt+x=0 ,X(-3)=2 ,dx/dt(-3)=1/2
I get x(t)=(C1+C2t)e^-1/3t
I cannot seem t... | 5 | [
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-0.01416015625,
... | 4,949 | 4949 | |
Help Wanted with Integral Word Problem
December 23rd 2008, 05:46 AM #1
Newbie
Joined
Dec 2008
Posts
21
Help Wanted with Integral Word Problem
Hello,
I am not any good with these word problems.
I am struggling with this:
"Find the total mass of a circular region of radius 6 if the density (m... | 5 | [
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0... | 4,950 | 4950 | |
Introducing: Marriage Sort
Update: I've created a live visualization of this algorithm, so you can see it in action - see Marriage Sort, a Visualization.
Two weeks ago, a link showed up on Hacker News on how to (mathematically)
select the best wife
. Tongue firmly in cheek, of course. The key takeaway from the artic... | 4 | [
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0.091796875,
-... | 4,951 | 4951 | |
[SOLVED] Show that p is divisible by 641?
May 21st 2009, 09:20 AM #1
[SOLVED] Show that p is divisible by 641?
If $p$ and $q$ are positive integers such that $\frac{p}{q} = 1 + \frac{1}{2} - \frac{2}{3} + \frac{1}{4} + \frac{1}{5} - \frac{2}{6} + \frac{1}{7} + \frac{1}{8} - \frac{2}{9} + \mbox{...} + \
frac{1... | 5 | [
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... | 4,952 | 4952 | |
e
Regression Methods
Regression is used for forecasting by establishing a mathematical relationship between two or more variables. We are interested in identifying relationships between variables and demand. If we know
that something has caused demand to behave in a certain way in the past, we would like to identify t... | 5 | [
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0.03564453125,
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-0.033203125,
-0.0233154296875... | 4,953 | 4953 | |
Hydraulic Pumps and Motors: Considering Efficiency
In a condition-based maintenance environment, the decision to change out a hydraulic pump or motor is usually based on remaining bearing life or deteriorating efficiency, whichever occurs first.
Despite recent advances in predictive maintenance technologies, the maint... | 4 | [
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Don't understand this convergence/divergence problem?
November 18th 2010, 06:53 PM #1
Junior Member
Joined
Nov 2008
Posts
66
Don't understand this convergence/divergence problem?
It's the sum from n=1 to infinity of 4/(n^2+2n).
Shouldn't this be converging to 0? I don't understand how to work this o... | 5 | [
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DIVERSITY INDICES
DIVERSITY INDICES: SIMPSON'S D AND E
Introduction: A diversity index is a mathematical measure of species diversity in a community. Diversity indices provide more information about community composition than simply species richness
(i.e., the number of species present); they also take the relative ab... | 4 | [
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0.03076171875,
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-0.00... | 4,956 | 4956 | |
Diagonalizable matrix
Show that a diagonalizable matrix having only one eigenvalue is a scalar matrix.
Let $A$ be a diagonalizable matrix having only one eigenvalue $\lambda$. By the defintion of diagonalizability, there exists an nonsingular matrix $P$ such that $B = P^{-1}AP$ (where B is a diagonal
matrix). The diag... | 5 | [
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CALCULATING RELATIVE HUMIDITY
┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┓
┃ ... | 4 | [
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[SOLVED] HELP: Evaluate the integral
Use integration by parts twice. Or observe that there exists polynomials $p(x)$ such that: $\frac{d}{dx} p(x)e^{-x} = (x^2+1)e^{-x}$ and the polynomials must be quadratic. Now find such a polynomial
and you will have the indefinite integral for your integral, so you can then apply t... | 5 | [
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Weighing Jelly Babies Puzzle - Solution
The Puzzle:
Real jelly babies have a mass of 10 grams, while imitation jelly babies have a mass of 9 grams.
Spike has 7 cartons of jelly babies, 4 of which contain real jelly babies, the others imitation.
Using a scale only once (and minimum disturbance of the boxes contents!... | 4 | [
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Your very own 32-way SIMD machine
What’s a good way of counting the number of bits set in a word? The obvious answer, adding the low bit to an accumulator, shifting right, and repeating, is O(n) in the number of bits in the word.
This is a sequential approach – and we can do better, complexity-wise, by using a parallel... | 4 | [
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Optimization problem, fencing
April 25th 2010, 09:07 PM
dorkymichelle
Optimization problem, fencing
11. A farmer wants to fence an area of 1.5 million square feet in a rectangular field and then divide it in half with a fence parallel to one sides of the rectangle. how can he do this so as to
minimize the co... | 5 | [
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onstruct
Tangents through an external point
Geometry construction using a compass and straightedge
This page shows how to draw the two possible tangents to a given circle through an external point with compass and straightedge or ruler. This construction assumes you are already familiar with
Constructing the Perpendi... | 4 | [
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Items tagged with integral
Hi, My goal is to compute the coefficient beta_i, so i will solve a system and get the coefficient beta_i. But my code return an error. Any help please. Many thinks
coef_approx:=proc(a,N,i,d)
local Fredholm,eq2,eq3,Vct_basis,fct,sys,eq4,M,w,b,M1,V,Vect_beta,h,x,phi,Kernel,lambda;
# Fredholm ... | 4 | [
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-0.01116943359375... | 4,964 | 4964 | |
IntroductionFrequency Tracking and Amplitude ControlControl AlgorithmStability AnalysisResolution AnalysisFrequency Tuning and Amplitude ControlControl AlgorithmStability AnalysisResolution AnalysisApplication to the Drive Axis of a Dual-Mass GyroscopeApplication to Mode Matching for a Vibratory GyroscopeConclusionsRef... | 4 | [
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0.063476562... | 4,965 | 4965 | |
FOIL Calculator- Multiplying Binomials
This binomial calculator calculates the product of a binomial raised either to the 2nd power or the 3rd power using the FOIL method. The product of the binomial expression is obtained, as with all
products, by multiplying two binomial expressions together.
To use this calculator... | 4 | [
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K modified Bessel function of the second kind
Article 11 — Appendix A.37
K modified Bessel function of the second kind
1. Definition
By definition modified Bessel function is solution of the modified Bessel equation
z^2 w′′ + z w′ − (z^2 + ν^2) w = 0
As second order equation it has two solutions, second of whi... | 4 | [
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ng
Rolling Window Regression (For Beginners)
28 Sep 2011
A beginners tool for analysing time varyin... | 4 | [
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Sequence behavior
March 20th 2011, 07:29 AM
Darkprince
Sequence behavior
Let x(n+1)= (3*x(n)) / (x(n))^2+2 n belongs in N, xo>=0 is some starting value
a) Show that if the sequence converges to a finite limit then this is 0 or 1.
b) Show that if 0<x(n)<1 then 0<x(n)<x(n+1)<1 and determine the limit beha... | 5 | [
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-0.0... | 4,969 | 4969 | |
Operators
On-line Guides
All Guides
eBook Store
iOS / Android
Linux for Beginners
Office Productivity
Linux Installation
Linux Security
Linux Utilities
Linux Virtualization
Linux Kernel
System/Network Admin
Programming
Scripting Languages
Development Tools
Web Development
GUI Toolkits/Des... | 4 | [
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Help
diff or Diff - differentiation or partial differentiation
Calling Sequence
diff(f, x1, ..., xj)
diff(f, [x1$n])
diff(f, x1$n, [x2$n, x3], ..., xj, [xk$m])
Remark: these calling sequences are also valid with the inert Diff command
Parameters
f - algebraic expression or an equation... | 5 | [
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Somemore integration help on trigo needed
December 16th 2012, 07:46 PM #1
Newbie
Joined
May 2010
Posts
13
Somemore integration help on trigo needed
1.
$\int \frac {x\arcsin (2x)}{\sqrt{1-4x^2}} dx$
i tried using substitution by letting u= $\arcsin (2x)$but got stucked.
2.
Evaluate $\int ... | 5 | [
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System of equations
Hi, My question is how do you solve analitically: sqrt(x)+y=7 and sqrt(y)+x=11 without solving a 4th degree polynomial equation? Thanks
Last edited by kolg; December 26th 2009 at 01:19 PM.
Dear kolg, $\sqrt{x}+y=11$------------(1) $\sqrt{y}+x=7$-------------(2) From (1); y<11 and $x\geq{0}$ From (... | 4 | [
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I.
Table of Contents | Introduction | Home
P l a n e G e o m e t r y
An Adventure in Language and Logic
based on
VERTICAL ANGLES
Book I. Proposition 15
WHEN TWO STRAIGHT LINES AB, CD intersect one another, then angles AEC, DEB are called vertical angles (or vertically opposite), as are angles AED, CEB. Those ar... | 4 | [
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Introduction to data calculations
You can use formulas and functions in lists or libraries to calculate data in a variety of ways. By adding a calculated column to a list or library, you can create a formula that includes data from
other columns and performs functions to calculate dates and times, to perform mathemati... | 4 | [
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Cover Time and Broadcast Time
License
when quoting this document, please refer to the following
DOI:
10.4230/LIPIcs.STACS.2009.1842
URN:
urn:nbn:de:0030-drops-18421
URL:
http://drops.dagstuhl.de/opus/volltexte/2009/1842/ Elsässer, Robert
;
Sauerwald, Thomas
Cover Time and Broadcast Time
Abstract
We introduc... | 4 | [
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Chi-square, by request, and not in a few words
Dec
15
Recently, someone asked me if I could explain chi-square in a few words. The short answer is, “No, I am incapable of using only a few words for any purpose whatsoever. If you doubt this, ask any of
my children.”
What is chi-square?
Chi-square is a measure of rela... | 4 | [
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-0.02380371093... | 4,977 | 4977 | |
er
┌──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┬─────────────────────────────────────────────────────────────┐
│ Physics of the Zero-Length Spring of Geoscience ... | 4 | [
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... | 4,978 | 4978 | |
Examples 2.2.4(b):
The cardinality of the power set of S is always greater than or equal to the cardinality of a set S for any set S.
To show that the cardinality of
P(S)
is greater than or equal to that of a set
S
we have to find either a surjection from
P(S)
to
S
or an injection from
S
to
P(S)
.
Define... | 4 | [
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-0.007171630859... | 4,979 | 4979 | |
integration=anti-differentiation
Hi I need some help to prove that integration is the opposite of differentiation. thx
When you say integration, I assume you mean finding the area bound by the function $\displaystyle f(x)$ and the $\displaystyle x$ axis, between $\displaystyle x = a$ and $\displaystyle x = b$.
Suppose... | 5 | [
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Logarithms
Logarithms: Basics :: Log Rules :: Graphing :: Practice Problems :: Quiz
A logarithm is the power to which a base must be raised to obtain a certain result. The exponential form
EXAMPLE 1: Problem: Solve the logarithmic equation Solution: This logarithmic equation is equivalent to the exponential equation
... | 4 | [
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-0.166992187... | 4,981 | 4981 | |
How To Calculate The Estimated Sales Value Of Your System
You want to sell your system but you do not know how to calculate the value of it. There are two basic accounting methods for this.
The first is called "Straight Line Depreciation".
IBM 486 (1989 - 2007)
The formula is very straight forward. The formula is (... | 4 | [
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0.... | 4,982 | 4982 | |
Problems and Solutions
Re: Problems and Solutions
Re: Problems and Solutions
Degrees, radians or grads?
I can tell just by thinking about it the answer for degrees and grads, but if you're working with radians, there might be a few exceptions, though I doubt it.
Why did the vector cross the road?
It wanted to be no... | 5 | [
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[Maxima] extracting the monomials from a multivariable polynomial
[Maxima] extracting the monomials from a multivariable polynomial
Stavros Macrakis macrakis at alum.mit.edu
Sun Jan 27 22:31:55 CST 2008
>
> Is there a function which will extract the list of monomials in a
> multivariable polynomial? For instance...:
... | 5 | [
-0.007537841796875,
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Is the gravitational force exerted by the Earth on the Moon equal to the centripetal force acting on the Moon?
The moon is revolving around the earth! Then,the gravitational force exerted by earth on moon should be equal to the centripetal force(the force acting inwards when an object is moving in circular
path). Is t... | 4 | [
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Inverse product of residues of a prime
September 9th 2009, 02:05 PM
Bingk
Inverse product of residues of a prime
Hi :)
I'm trying to prove that $\prod_{i=1}^{p-1}\Bigl(\displaystyle\frac{1}{i}\Bigr) \equiv -1 \ (mod \ p)$
The way I see it, the inverse of $1$ is itself, and from $2$ to $p-2$, the invers... | 5 | [
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-0.007537... | 4,986 | 4986 | |
The Pari Package On Linux
Fast math is Pari's claim to fame. Klaus-Peter Nischke introduces us to a small, fast, flexible calculator with symbolic and numerical theoretic abilities.
In addition to the standard mathematical operations +, -, *, and /, you find transcendental and number theoretical functions, functions ... | 5 | [
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0.04345703... | 4,987 | 4987 | |
Questions from 'Fudamentals of Complex Analysis' by Saff
July 22nd 2010, 11:56 PM #1
Junior Member
Joined
Jun 2009
Posts
33
Questions from 'Fudamentals of Complex Analysis' by Saff
Would some kind soul with access to this book pretty please post the following questions for me? I need to do these for my c... | 4 | [
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-0.0537109375,
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IntroductionTarget Motion and Observation Model of Sensor SystemsPrinciple of the PF-RBF AlgorithmGeneric Particle FilterTrajectory Approximation with RBFNImproved PF Algorithm Combined with RBFNExperimental ResultsExperiment SetupTracking resultsExecution time and accuracyConclusionsReferences and NotesFigures and Tab... | 4 | [
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0.... | 4,989 | 4989 | |
IntroductionKinematic EquationKinematic EquationKinetic ParametersTorsion StiffnessDamping FactorMoment of InertiaPhase-Frequency CharacteristicsPhase-Frequency CharacteristicsPhase-Frequency Characteristics of Different Damping RatiosConditioning Circuits ImpactDynamic Simulation of Phase DifferenceSimulation Modeling... | 4 | [
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0.051269... | 4,990 | 4990 | |
FLT DEMONSTRATION By Anthony.R.Brown
FERMATS LAST THEOREM DEMONSTRATION! BY, ANTHONY.R.BROWN (1998 SOLVED )
THE INFINITE MATHEMATICAL PATTERN OF CUBE NUMBERS!
BELOW IS MY DEMONSTRATION OF FERMATS LAST THEOREM,IT IS BASED ON THE INFINITE MATHEMATICAL PATTERN OF THE FIRST (10) CUBE NUMBERS AS A GROUP! YOU WILL SEE THA... | 4 | [
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-0.005615234375,
-0.10595703125,
0.07177... | 4,991 | 4991 | |
Solving AAS Triangles
"AAS" means "Angle, Angle, Side"
This means we are given two angles and one side (which is not between the angles).
Exampl... | 4 | [
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-0.03125,
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... | 4,992 | 4992 | |
MATLAB
Pricing Derivatives Securities using MATLAB
02 Apr 2007 (Updated 29 Oct 2010)
Examples of pricing derivatives securities using MATLAB
exampleBDT.m
%% Pricing Derivatives Securities using Matlab
%
% ... | 5 | [
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0.04... | 4,993 | 4993 | |
Coordinate Geometry
ADVERTISEMENT
Area of a Triangle - box method (Coordinate Geometry)
The area of a triangle can be found by subtracting the area of simpler shapes from its bounding box.
Try this Drag any point A,B,C. The area of the triangle ABC is continuously recalculated using the box method. You can also ... | 4 | [
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0.0029449462890625,
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-0.043212890... | 4,994 | 4994 | |
8 problems that I can't understand after trying for days and looking examples online
December 17th 2012, 07:45 PM
Heisenberg
Re: 8 problems that I can't understand after trying for days and looking examples onl
Quote:
$f(x)=(x-2)^3$ $y=(x-2)^3$
Switching
$x$
and
$y$
:
$x = (y-2... | 4 | [
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-0.083984375,
-0.0184326171... | 4,995 | 4995 | |
MathGroup Archive: April 2005 [00954]
[Date Index] [Thread Index] [Author Index]
Re: AW: Converting a mapping into a well-defined function
• To: mathgroup at smc.vnet.net
• Subject: [mg56571] Re: [mg56523] AW: [mg56499] Converting a map... | 4 | [
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0.088... | 4,996 | 4996 | |
Laboratory Exercise 5: ANOVA
Laboratory Exercise 5: ANOVA
----------------------------
One-way ANOVA
(ANOVA-table, Contrast)
Examining the reading skills of children in the U.S., three methods of
education were compared. Several variables were measured before the
lessons started. One of the goals of the pretest was... | 4 | [
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Quick Review 8-5
Unit 8 - Objective 5 - Odd powers of Sine and/or Cosine
In the first section of this unit, you integrated powers of sine as long as there was a single power of cosine to be the du.
When the integral contains only an odd pow... | 5 | [
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Group Actions
We define mathematical objects for our puzzles to allow easy discussion of the ideas needed to solve them.
Let $\Omega$ be the set of all colourings of a necklace. For example, with 3 colours and 6 beads we have $|\Omega| = 3^6$. Let $\alpha \in \Omega$ be a colouring of a necklace, such as RGBRGB, and
... | 4 | [
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0.... | 4,999 | 4999 |