content string | quality_label int64 | meta string | all-MiniLM-L6-v2_embedding list | doc_id int64 | unique_id string |
|---|---|---|---|---|---|
exponential growth
add e^x to both sides dN/dt + (1/10) N(t) = 9e^x
I'm going to have to go. Hopefully back tomorrow. I really appreciate your help!
Glad to help. What you want to do is calculate an integrating factor, which is in this case: $\mu(t)=e^{\frac{1}{10}\int\,dt}=e^{\frac{t}{10}}$ You want to multiply the ... | 5 | [
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0.078125,
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Legendre symbol
May 6th 2008, 02:18 PM #1
Newbie
Joined
Apr 2008
Posts
11
Legendre symbol
Determine the values of
47/37 and
3/43
stating any properties of the legendre symbol used.
is there just one method to solve all of these or are there different methods to solve depending on the ... | 5 | [
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0.0079345703125,
0.01098... | 14,301 | 14301 | |
Find the point of intersection of three planes
Okay, I can't guarantee if I have understood the question perfectly, but here's what I came up with:
Plane 1
normal vector = CA x BA = (0,1,5) x (1,1,8) = (3,5,-1)
So the equation can be written as 3x+5y-z+k=0.
Since it passes point B, 3(1)+5(1)-(8)+k=0, so k=0. (3+5-8+... | 4 | [
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An Energy Conserving Numerical Scheme for the Dynamics of Hyperelastic Rods
International Journal of Differential Equations
Volume 2012 (2012), Article ID 718308, 15 pages
http://dx.doi.org/10.1155/2012/718308
Research Article
An Energy Conserving Numerical Scheme for the Dynamics of Hyperelastic Rods
^1Fraunhofer I... | 4 | [
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-0.0... | 14,303 | 14303 | |
MGF moment help?
October 23rd 2009, 05:15 PM #1
Junior Member
Joined
Sep 2009
Posts
69
MGF moment help?
If X has the moment generating function
M(t) = (e^ ((PI)*t ) - e^ (et) ) / t
find E (X), V ar (X), and P (2.8 <= X < 3). help please?
What you need to do get E[X] is to evaluate the first ... | 5 | [
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Physics Forums - View Single Post - Time-averages of superposition of waves.
1. The problem statement, all variables and given/known data
Consider the superposition of two waves;
[itex]\zeta_1 + \zeta_2 = \zeta_{01} e^{i(kr_1 - wt)} + \zeta_{02} e^{i(kr_2 - wt + ∅)} [/itex]
where [itex] ∅ [/itex] is a phase differe... | 4 | [
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Correlation & linear regression
March 6th 2011, 10:38 AM #1
Newbie
Joined
Oct 2010
Posts
7
Correlation & linear regression
Y and Z are two random variables with Correlation of YZ of 0.5
IF X=2Z-1, then correlation of XZ is equal to;
Can anyone help? Thanks in advance
Correlation coefficient... | 4 | [
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Interval ==> Connected
Hi all,
I'm having difficulty proving that all intervals of the real line are
connected in the sense that they cannot be decomposed as a disjoint
union of two non-empty open subsets.
Here is the "proof":
Suppose X is an interval and
X = (X intersect U) union (X intersect V)
where U,V are ope... | 5 | [
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Second order DE help
January 10th 2010, 01:30 PM #1
Second order DE help
Hi,
I have the equation:
$\begin{cases}y^{\prime\prime} + 3y^{\prime} + 2y = sin~x \\<br /> y(0) = 1 \\<br /> y^{\prime}(0) = 1 \end{cases}$
The auxiliary equation $t^2 + 3t + 2 = 0$ has the solutions
$x_{1}=-1~~ x_{2}=-2$
... | 5 | [
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Verify My Identity - Impossible?
April 8th 2008, 07:13 AM #1
Newbie
Joined
Apr 2008
Posts
3
Verify My Identity - Impossible?
Our teacher gave us this problem to work on this week, but I think either he or someone else copied it down wrong. I have tried everything I can think of; see if any of you can get... | 4 | [
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Irreducibles
November 17th 2009, 02:32 PM #1
Newbie
Joined
Nov 2009
Posts
1
Irreducibles
If we define $Z\left[ {\sqrt { - 5} } \right] = \left\{ {a + b\sqrt { - 5} :a,b \in Z} \right\}$, how would I show that 2, 3, $1 + \sqrt { - 5}$ and $1 - \sqrt { - 5}$ are all irreducible?
I have shown that none... | 5 | [
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Derative
How to find a derative by definition for such a function: $y=xln^2(2x+1)$
Yes, I have. I need to find derative in the point (3) $ln^2(2h+2x+1)-(3/h)*ln^2(2x+1)$ $ln(2h+7)-ln(7)^(3/h)(ln(2h+7)+ln7^(3/h)$ There my knowledge finishes.
You need to use the product rule and the chain rule... Chain rule: $\frac{dy}... | 5 | [
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Show the taxican norm is lipschitz equivalent to the Euclidean norm
November 7th 2009, 02:50 AM
phillips101
Show the taxican norm is lipschitz equivalent to the Euclidean norm
What it says in the title. (Aside from the fact 'taxican' should be read as 'taxicab').
It's obvious that the taxicab norm is always... | 5 | [
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From Population Dynamics to Partial Differential Equations
Differential equation models for population dynamics are now standard fare in single-variable calculus. Building on these ordinary differential equation (ODE) models provides the opportunity for a
meaningful and intuitive introduction to partial differential eq... | 4 | [
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Solutions for July-August, 2002 problems
157.
Prove that if the quadratic equation x^2 + ax + b + 1 = 0 has nonzero integer solutions, then a^2 + b^2 is a composite integer.
Solution.
Suppose that the integer roots are u and v. Then ... | 5 | [
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more help upper bounds
November 14th 2006, 07:34 PM #1
Member
Joined
Mar 2006
Posts
82
more help upper bounds
1) Let A and B be a subsets of the real numbers with least upper bound u and v. Prove that their union has a least upper bound, and express it in terms of u and v.
2) Let A be the set of neg... | 5 | [
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Patent US7239992 - Apparatus for simulating the deformation of materials, notably of soft body tissues
CROSS-REFERENCE TO RELATED PATENT APPLICATIONS
This application claims priority to French Patent Application 0101717, filed Feb. 8, 2001 including the specification, drawings, claims and abstract, incorporated herein... | 4 | [
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second order differentiations stationary points problems on maxima and minima.
June 5th 2010, 11:53 PM #1
Member
Joined
Oct 2009
Posts
202
second order differentiations stationary points problems on maxima and minima.
Two positive quantities, $p$ and $q$,very in such a way that ${p^3}{q}=9$.Another quant... | 5 | [
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What kind of a graph is this?
April 29th 2009, 02:04 PM #1
Newbie
Joined
Aug 2008
Posts
20
What kind of a graph is this?
y= (2x-2x^2)^(1/2)
Hyperbola?
And also-- in a Taylor series approximation, when the questions asks you to use up to the fifth term (NOT the fifth power term), does that just... | 4 | [
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Physics Forums - Parallel Lines
- -
Parallel Lines
(
http://www.physicsforums.com/showthread.php?t=168300
)
Parallel Lines
1 Attachment(s)
Lines AB and CD are parallel. You are given M and N as midpoints of AD and BC, respectively.
Prove that MN is parallel to AB and CD
Ok, so I think I way (WAY) over compl... | 4 | [
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trigonometric Functions (again...)
April 4th 2007, 07:28 PM #1
Junior Member
Joined
Mar 2007
Posts
32
Hi,
I'm trying to solve these two problems.
1. Use the given function values and trigonometric indentites to find the indicated trigonometric functions.
sec = 5, tan = 2*sqrt(6)
a) cos θ... | 4 | [
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0.06445312... | 14,320 | 14320 | |
minimum value help
December 19th 2010, 06:53 AM #1
Senior Member
Joined
Sep 2009
Posts
300
minimum value help
Hello,
I am stuck with this question ,:
find the minimum value of $(x + 1)^2 + y^2$where $x + y$are real numbers with $x+y=1$ justify your answer
can someone help please?
$(x+1... | 4 | [
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Brevet US4044241 - Adaptive matched digital filter
BACKGROUND OF THE INVENTION
This invention relates generally to techniques of electronically filtering a desired signal from undesired noise, and more specifically relates to linear digital filters.
A matched digital filter is basically a linear filter whose transfer... | 4 | [
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Thanks All of the coffee mixtures sold in a certain store
Author Message
TAGS:
Thanks All of the coffee mixtures sold in a certain store [#permalink] 22 Mar 2004, 17:17
lvb9th
... | 4 | [
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Help with finding stationary point (work needs checking)
August 10th 2010, 10:38 PM #1
Member
Joined
Oct 2009
Posts
107
Thanks
2
Help with finding stationary point (work needs checking)
Let f( x ) = 2x^3 - 3x^2 - 12x + 6, x E R (E= element of). Then (give the exact coordinates and the type of each st... | 4 | [
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Math Help
1. June 25th 2010, 02:15 AM #1
2. June 25th 2010, 02:37 AM #2
First thing I would do is take the sine of both sides, and use the addition of angles formula on the RHS.
3. June 25th 2010, 02:54 AM #3
Ok, so I've got:
sin (arcsin(1-2x)) = sin(pi/3) - sin(arcsin(x))
... | 4 | [
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Intermediate value theorem
February 26th 2008, 08:20 PM #1
Newbie
Joined
Feb 2008
Posts
12
Intermediate value theorem
Can anyone help me with this?
Let f be a continuous function on [0,4]. Show that there must be values c and d in [0,4] such that:
c - d = 2 and f(c) - f(d)= [f(4) - f(0)]/2
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Patent US20030112333 - Method and system for estimating objective quality of compressed video data
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The present invention relates to a method and system for measuring the quality of compressed video data and, in particular, to a method and system for ... | 4 | [
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0.00390625,
0.09326171875,
0.0... | 14,327 | 14327 | |
Math Help
November 21st 2009, 08:51 PM #1
Junior Member
Joined
Oct 2009
Posts
56
homomorphism
Show that f(x,y)=x(-1)^y is homomorphism from the direct product group ℝ(positive) ×ℤ2 to the group ℝ*.
(need to show that f((a,b)(c,d))=f(a,b)f(c,d), is it right? but I can't get them equal to each other)... | 4 | [
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Continued fraction
i need help to solve this exercise To prove the continued fraction of (d^2 +1)^(1/2) is [d;2d,2d,2d,….]
Hello, user! Prove that the continued fraction of . $\sqrt{d^2 +1}$ . is . $\bigg[d,2d,2d,2d, \hdots\bigg]$ $\text{Let: }\;x \;=\;d + \frac{1}{2d + \dfrac{1}{2d + \hdots}}$ $\text{Add }d\text{ to
... | 4 | [
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0.04028320... | 14,329 | 14329 | |
sovle equation
April 14th 2008, 09:23 AM #1
Junior Member
Joined
Apr 2008
Posts
30
sovle equation
If (a) Solve this equation for the distance of the image in terms of the other two quantities. Simplify your answer and put the denominator of the simplified fraction into the answer box (notice
the nume... | 4 | [
0.022705078125,
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... | 14,330 | 14330 | |
Maximum Likelihood Question
March 6th 2011, 03:34 AM
languagelearner23
Maximum Likelihood Question
Q. A bag contains sequentially numbered lots (1,2...N). Lots are drawn at random (each lot has the same probability of being drawn). Two lots are drawn without replacement and are observed to be
X_1 = 17 and X_... | 5 | [
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laplace inverse
find laplace inverse of log(s+a)/(s+b) do we have to apply power series in it
If you just want the answer, you can get that here: Inverse Laplace transform - Hollywood
You can use the fact that $\mathcal{L}(tf(t))=\int_{0}^{\infty}e^{-st}[tf(t)]dt=\int_{0}^{\infty}-\frac{d}{ds}e^{-st}f(t)dt=-\frac{d}{... | 5 | [
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0... | 14,332 | 14332 | |
Manipulating Formulas with Derivatives
One way to make sense of what they're doing is via differential forms. If the sequence
x[i]
are generalized coordinates on (a local patch of) the state space, so that any function
f
on the state space can be represented as a function of the
x[i]
's, then one property of diff... | 4 | [
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(Algebraic Inequalities) Can somebody show me the first step to these 3 equations?
January 28th 2009, 04:19 PM
nathan02079
(Algebraic Inequalities) Can somebody show me the first step to these 3 equations?
Hello, I'm absolutely stuck. :S My teacher gave me these 'challenge' problems and I have no idea how to get... | 4 | [
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J j thomson's previous experiment
I thought I was going to like this book, but it's defying me.
I'm staring at pg 123 of Tipler's Modern Physics text (3rd ed.) This is talking about an experiment he says Thomson did before the "famous" J J Thomson experiment. It goes like this:
In his first measurement, Thomson det... | 4 | [
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Calculate the flux.
May 19th 2006, 12:49 AM #1
Junior Member
Joined
Apr 2006
Posts
37
Calculate the flux.
Given is $\vec{v}=x\vec{u}_1+y\vec{u}_2+z\vec{u}_3$ and they ask me to calculate the flux if
$\left \{ \begin{array} \ z=x^2+y^2 \\ \ x^2+y^2 \leq 1 \end{array} \right$
Where $\vec{n}$ is i... | 5 | [
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Patent US5528738 - Method and apparatus for antialiasing raster scanned, polygonal shaped images
FIELD OF THE INVENTION
The present invention relates generally to raster scan graphics display systems, and more particularly to a graphics display apparatus employing improved methods for antialiasing raster scanned,
poly... | 4 | [
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Physics Forums - Finding the equation of the intersection
finding the equation of the intersection
1. The problem statement, all variables and given/known data
Plane 1:2x-3y+8z=7
Plane 2:x-8y+z=14
Plane 3:5x-14y+17z=28
2. Relevant equations
N/A
3. The attempt at a solution
I took plane 1 and subtracted (plane 2)... | 4 | [
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Algebra question
Hello, champrock! $\text{If }\:\begin{Bmatrix}x &=& t^{\frac{1}{t-1}} & {\color{blue}[1]} \\ y &=& t^{\frac{t}{t-1}} & {\color{blue}[2]} \end{Bmatrix}\quad t > 0,\:t eq 1$ The relation between $x$
and $y$ is: . . $(a)\;y^x \:=\:x^{\frac{1}{x}} \qquad (b)\;x^{\frac{1}{y}} \:=\:y^{\frac{1}{x}} \qquad (c)... | 5 | [
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Prove (lim n -> infinity) (1 + 1/n)^n = e
Using what preliminaries? That is sometimes used as the definition of e!
Lacking that, the simplest way is to use L'Hopital's rule. Strictly speaking L'Hopital's rule only applies to limits of differentiable functions but the limit of (1+1/x)<sup>x</sup>, as x-> infinity,
must... | 5 | [
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Magnetostatics
latentcorpse
A cylindrical pipe of radius a and length L is filled with mercury of electrical conductivity [itex]\zeta[/itex]. A potential difference V acts across the two ends of the pipe, creating an electric
current through the mercury (which remains stationary).
(i)Find the current density, assum... | 5 | [
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-0.013916... | 14,341 | 14341 | |
Proportionality
January 1st 2011, 05:02 PM #1
Member
Joined
Sep 2009
Posts
145
Proportionality
Hell-o,
I'm primarily looking for alternative solutions, assuming my method wasn't a fluke
The stopping distance of a car is the number of feet that the car travels after the driver starts applying th... | 4 | [
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-0.... | 14,342 | 14342 | |
trying to find if a particular series converges or diverges
October 11th 2011, 09:28 PM #1
Member
Joined
Jan 2011
Posts
87
trying to find if a particular series converges or diverges
Hey all,
I have the following series $\sum_{n=1}^{\infty}(\frac{ln(n)}{n})^2$. I used the integral test, but since th... | 5 | [
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17x-3(4+5x)=44
If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying 17x + -3(4 + 5x) = 44 17x + (4 * -3 + 5x * -3) = 44 17x + (-12 + -15x) = 44 Reorder the terms: -12 + 17x + -15x = 44 Combine like terms: 17x + -15x = 2x -12 + 2x = 44 Solving -12 + 2x =
4... | 4 | [
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0.018798... | 14,344 | 14344 | |
double sequence
August 31st 2008, 12:21 AM #1
Member
Joined
Jun 2008
Posts
170
double sequence
Let $d$ be a real number. For each integer $m \geq 0$, define a sequence $\{a_{m}(j) \}$, $j = 0,1,2, \ldots$ by the condition $a_{m}(0) = d/2^{m}$, and $a_{m}(j+1) = (a_{m}(j))^{2}+2a_{m}(j), \
j \geq 0$. ... | 5 | [
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0.0279541015625... | 14,345 | 14345 | |
Of the 600 residents of Clermontville, 35% watch the
Author Message
TAGS:
Of the 600 residents of Clermontville, 35% watch the [#permalink] 09 Oct 2005, 19:56
... | 4 | [
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Two Precalculus Problems
February 7th 2008, 02:48 PM
currypuff
Two Precalculus Problems
1.) $3x/2 (2x-17/3)=3/2$. Note: To clarify, the "/" mark indicates fractions. Everything is a fraction except for 2x. I'm not certain how to solve this one, since I don't know exactly how to
distribute fractions.
2.)... | 4 | [
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0.0019683837890... | 14,347 | 14347 | |
Answer - Divisors
Answer :
This puzzle amounts to finding the smallest possible number that has exactly sixty-four divisors, counting 1 and the number itself as divisors.
The least number is 7,560. The pilgrims might, therefore, have ridden in single file, two and two, three and three, four and four, and so on, in exa... | 4 | [
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0.0296630859375,
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0.0172119140625,
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... | 14,348 | 14348 | |
Running Spheres in Agda, Part II
(Sorry for the long delay after the Part I of this post.)
This post will summarize my work on defining spheres in arbitrary finite dimensions (Sⁿ) in Agda. I am going to use the tools for higher-order paths (discussed in Part I) to build up everything for
spheres. There are many ways ... | 4 | [
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0.0... | 14,349 | 14349 | |
search results
Expand all Collapse all Results 26 - 37 of 37
26. CMB 2004 (vol 47 pp. 215)
Countable Amenable Identity Excluding Groups
A discrete group $G$ is called \emph{identity excluding\/} if the only irreducible unitary representation of $G$ which weakly contains the $1$-dimensional identity represent... | 4 | [
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0.06640625,
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Mean Value Theorem
December 26th 2009, 02:51 PM #1
Junior Member
Joined
Dec 2008
Posts
33
Mean Value Theorem
Using the Mean Value Theorem, prove that ln(103) - ln(100) is less than or equal to 0.03
I tried taking f(x) = 1/x on the interval [100,103]. The average value would then be (1/3)[ln(103)-ln(... | 5 | [
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-0.01031494140... | 14,351 | 14351 | |
sandwich measurable set
October 14th 2013, 02:44 AM
Sonifa
sandwich measurable set
Suppose that A is subset of R (real line) with the property for every ε > 0 there are measurable sets B and C s.t. B⊂A⊂C and m(C\B)<ε
Prove A is measurable
By definition A is measurable we need to prove m(E)=m(E∩A)+m(E\A) ... | 5 | [
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0.054443359375,
0.00077056884765... | 14,352 | 14352 | |
Transition Matrix - Stationary Distribution
September 12th 2009, 02:42 PM #1
Newbie
Joined
Aug 2009
Posts
21
Transition Matrix - Stationary Distribution
Consider the one-step transition matrix
$P = \begin{pmatrix} q & p & 0 \\0 & q & p \\ p & 0 & q \\ \end{pmatrix}$
where $q = 1 - p$ and $0 < p... | 4 | [
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-0.003021240234375,
-0.0595703125,
-0.0527... | 14,353 | 14353 | |
Basic Binomial Distribution... Complex Permutation
September 13th 2010, 08:25 AM #1
Newbie
Joined
Sep 2010
Posts
4
Basic Binomial Distribution... Complex Permutation
Hey guys, here's my problem:
"Ten percent of cadets at the police academy chew gum regularly. What is the probability (to the nearest ... | 4 | [
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Inductive Proof on Well Known Sum
Register to reply
by Shackman
Tags: inductive, proof
P: 22 1. The problem statement, all variables and given/known data
Use induction to prove the equation
... | 4 | [
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0.0390625,
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0.06640625,
0.0003757476806640625,
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0.01434326171875,
-0.012939453125,
0.0427246... | 14,355 | 14355 | |
Matrix Image and Kernel
tomeatworld
1. The problem statement, all variables and given/known data
i) Find the Image and Kernel of A = (2,1)(-4,-2) (where each bracket is a row).
ii) Calculate A^2 and use i) to explain your result.
2. Relevant equations
None
3. The attempt at a solution
So I can do everything up to... | 5 | [
0.01220703125,
0.056640625,
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0.03076171875,
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0.083984375,
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-0.05322265625,
0.0439453125,
-0.08203125,
0.01422119140625... | 14,356 | 14356 | |
Limits and continuity
Another way is to use
polar coordinate system
.
So change x, and y a little:
[itex]x = r \cos \theta[/itex]
[itex]y = r \sin \theta[/itex]
When x, and y tends to 0, r tends to 0, whereas [itex]\theta[/itex]
does not
(Do you know why?).
When x -> 0 and y -> 0, and the limit of a function i... | 4 | [
-0.0235595703125,
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0.11181640625,
-0.03125,
-0.0257568359375,
-0.025634765625,
-0.076171... | 14,357 | 14357 | |
An Identity of Trig
For $n\geq 2,$ Show that $\cot(\frac{\pi}{2n})\cot(\frac{2\pi}{2n})\cot(\fra c{3\pi}{2n})\cdots\cot(\frac{(n-1)\pi}{2n})=1$ .(hint: Use complex numbers.)
All you need is the trig identity $\sin\left( \frac{\pi}{2} - x\right) = \cos x$. If you write $\cot \theta = \frac{\cos \theta}{\sin \theta}$ an... | 5 | [
-0.06201171875,
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-0.0341796875,
0.000637054443359375,
-0.017822265625,
-0.0184326171875,
0.0996093... | 14,358 | 14358 | |
MathGroup Archive: September 2011 [00017]
[Date Index] [Thread Index] [Author Index]
Re: Problem with complex integration in Mathematica 7.0.1
• To: mathgroup at smc.vnet.net
• Subject: [mg121171] Re: Problem with complex integration in... | 5 | [
-0.11376953125,
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-0.08935546875,
-0.0238037109375,
-0.1015625,
... | 14,359 | 14359 | |
logically equivalent
March 17th 2010, 06:15 PM #1
Junior Member
Joined
Oct 2009
Posts
35
logically equivalent
can anyone explain to me how to prove that p → q and not q → not p are logically equivalent without truth tables
Hello, questionboy!
Prove that $p\to q$ and $\sim\!q \to \;\sim\!p$ are ... | 4 | [
0.00121307373046875,
0.00579833984375,
0.049560546875,
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0.0625,
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0.049560546875,
0.07763671875,
0.0986328125,
0.00147247314453125,
-0.0230712890625,
-0.02661... | 14,360 | 14360 | |
x and y are integers, is x even 1. x(y + 1) is even 2. (x +
Author Message
TAGS:
Bhai
SVP x and y are integers, is x even 1. x(y + 1) is even 2. (x + [#permalink] 29 Jan 2006, 21:55
Joined: ... | 4 | [
-0.054443359375,
0.0634765625,
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-0.043701... | 14,361 | 14361 | |
Factorise (m+1)^2 - 9
February 12th 2011, 03:20 AM #1
Member
Joined
Jan 2011
Posts
104
Factorise (m+1)^2 - 9
Factorise
(m+1)Square -9
My answer : (m-8)(m+8)
And also, is it true that we can't write capital letters for algebra? only small letters.
Thanks so much for helping!
Last e... | 4 | [
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... | 14,362 | 14362 | |
differential equation problem
solve the following differential equation dy/dx=x[(x^2 + 4)^(1/2)] with initial condition y(0)=1
consider the function: f(x) = (1/3)(x^2+4)^{3/2} df/dx = (1/3)(3/2) 2x (x^2+4)^{1/2} = x[(x^2 + 4)^(1/2)] So you can use this to integrate your DE you have: y = (1/3)(x^2+4)^{3/2} + C, when x=... | 5 | [
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0.064453125,
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0.010498046875,
-0.02001953125,
-0.00570... | 14,363 | 14363 | |
Can someone please explain how to compute the mean and standard deviation for this qu
November 19th 2009, 06:13 AM
Ttops
Can someone please explain how to compute the mean and standard deviation for this qu
I wasnt sure where to post this question but since it`s stats, i decided to post it here.
p(x)=(1/4)(... | 4 | [
0.06005859375,
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Moment of Inertia Problem
1. The problem statement, all variables and given/known data
A compound disk of outside diameter 140.0cm is made up of a uniform solid disk of radius 50.0cm and area density of 3.00 g/cm^2 surrounded by a concentric ring of inner radius 50.0cm, outer radius
70.0cm, and area density 2.00 g/cm^2... | 4 | [
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0.02294921875,
0.01385498046875,
0.023681... | 14,365 | 14365 | |
distribution property
August 26th 2009, 12:58 PM
yemino
distribution property
Hi,
I have the follow problem:
Let u a distribution on $\mathbb{R}^n$ have de property that $<u,\phi> \geq 0$ for all real valued nonnegative $\phi \in C_c^{\infty}(\mathbb{R}^n)$. Show that $u$ is of order 0.
--edited!... | 5 | [
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0.047607421875,
-0.10498046... | 14,366 | 14366 | |
Math Help
October 26th 2008, 08:52 AM #1
Newbie
Joined
Sep 2008
Posts
18
limits
lim ( 1 + 3/x) ^(.2x)
x->infinity
i have no idea how to solve this limit, if someone could point me in the right direction, that would be great. thanks!
Put $x\mapsto\frac1x$ and the limit becomes $\lim_{x\to0}... | 5 | [
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0... | 14,367 | 14367 | |
Binomial series
January 9th 2009, 09:37 AM #1
Member
Joined
Dec 2007
Posts
90
Binomial series
Expand
(1+2x) ^(5/2)
So far i have
1 + 5x – 15/2 x² but am not sure about the x³
thanks
The generalized binomial formula $(a+ b)^c$ where c does not have to be an integer says
$(a+ b... | 4 | [
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-0.02... | 14,368 | 14368 | |
Definite Integral Int by Parts
March 3rd 2009, 03:25 AM #1
Member
Joined
Nov 2007
Posts
232
Definite Integral Int by Parts
Please check. I have problems solving for the second part of:
$\int_a^b u \, dv = uv \mid_a^b - \int_a^b v \, du$
Use integration by parts to solve the given integral.
... | 5 | [
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-0.023437... | 14,369 | 14369 | |
Patent US6108772 - Method and apparatus for supporting multiple floating point processing models
BACKGROUND
1. Field of the Invention
The invention relates to the field of processing floating point numbers in a computer system.
2. Art Background
Floating Point Formats:
Floating point numbers are typically represen... | 4 | [
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... | 14,370 | 14370 | |
ramp-friction practice problems
Newton's 2nd Law - problems involving ramps and friction (with answers)
Steps:
1. Draw a force diagram; deconstruct forces into x- and y-components
2. Determine whether an acceleration/net force is present
3. Write out the force equations in the x- and y-directions
4. Use algebra t... | 4 | [
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0.0573... | 14,371 | 14371 | |
Patent US6409172 - Methods and apparatus for a casino game
CROSS REFERENCE TO RELATED APPLICATIONS
Not Applicable
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
Not Applicable
REFERENCE TO A “MICROFICHE APPENDIX”
Not Applicable
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present i... | 4 | [
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0... | 14,372 | 14372 | |
Proof using Element Chasing the associative law of symetric difference
September 3rd 2012, 06:26 PM #1
Newbie
Joined
Sep 2012
From
oxford,ms
Posts
3
Hi there,
I have to prove using Element Chasing that (A delta B) delta C = A delta ( B delta C)
I have the Venn drawn, and was told to start with... | 5 | [
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0.04052734375,
0.0262451171875,
... | 14,373 | 14373 | |
Time series question
November 18th 2011, 06:09 PM #1
Member
Joined
Oct 2008
Posts
206
Time series question
Suppose I have two series:
$x_t=0.3x_{t-1}+w_t$
$y_t=x_t+0.5w_t$
where $w_t\sim WN(0,1)$.
I try to find the autocovariance function of $y_t$ as followed:
$\gamma(h)=Cov(y_{t... | 5 | [
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-0.12451171875... | 14,374 | 14374 | |
Population concordance ratio
An interesting problem in population genetics is the following: how often are two individuals from a population A more similar to each other than either of them is to an individual from another
population B?
Suppose you have a similarity function for individuals, sim(a, b)
(In my experi... | 4 | [
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0.00028228759765625,
-0.033... | 14,375 | 14375 | |
Conceptual Question: Light VS Electro-Magnetic Induction
FireStorm000
Um, no. By that I mean I took a year of calculus based physics, one semester of mechanics, and one semester of E&M. As well as a separate one year format calculus one course. Both of which show up on
my college transcript. No need to be condescend... | 4 | [
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find tangent lines
February 6th 2010, 10:31 AM #1
given
$y=x^2$ and $y=-x^2+6x-5$
I know the derivatives are $2x$ and $-2x+6$
how are the equations of 2 tangent lines found to both graphs
the answers are: $y=2x-1$ and $y=4x-4$
Last edited by bigwave; February 7th 2010 at 08:40 PM. Reason: ... | 5 | [
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0.125,
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Patent US7463758 - Method of deriving a quantitative measure of a degree of calcification of an aorta
BACKGROUND OF THE INVENTION
The present invention relates to a method of deriving a quantitative measure of a degree of calcification of an aorta.
Inpainting is a technique that originates from retouching paintings w... | 4 | [
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One dimensional motion with constant acceleration
The equation of motions in one dimension for constant acceleration is obtained from the equations of motion established for the general case i.e. for the three dimensional motion. In one dimension,
the equation of motion is simplified (r is replaced by x or y or z with ... | 4 | [
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0... | 14,379 | 14379 | |
Pythagorean triple
March 8th 2009, 05:54 PM #1
Junior Member
Joined
Oct 2008
Posts
31
Pythagorean triple
prove algebraicly the sum of the reciprocals of 2 consecutive odd numbers always produces the leg of a pythagorem triple
$1/3+1/5=8/15$
$8^2+15^2=17^2$
let $2n-1$ and $2n+1$ be the two o... | 4 | [
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0.050048828125,
0.0030975341796... | 14,380 | 14380 | |
simple trig equation
June 1st 2009, 03:33 AM #1
Senior Member
Joined
Jul 2008
Posts
347
sin (x + PI/3) = cos (x – PI/3). Solve for x.
Hi
Could someone please help me solve the above question? For some reason I can't seem to get x.
I end up with:
sin x + root(3) cos x = cos x + root(3) ... | 4 | [
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0.126953125,
-0.0390625,
-0.028076171875,
0.02... | 14,381 | 14381 | |
Homework 6. Assigned: Thu Apr 5. Due: Fri Apr 13 at 4 p.m.
Splines and Parametric Piecewise Cubic Hermite Polynomials
1. Splines: write a Matlab function myspline(x,f,n,k) to plot a cubic spline passing through n+1 data points (x[i],f[i]), i=1,...n+1, plotted at k additional points in each interval (x[i], x[i+1]).
... | 4 | [
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-0.0625,
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0.0224609375,
-0.0732421875,
-0.07861328... | 14,382 | 14382 | |
Bonus question involving derivatives?
March 20th 2010, 05:33 PM
Solid8Snake
Bonus question involving derivatives?
Show that the point on the graph of y=lnx which is closest to the origin lies on the parabola y= -x^2.Draw a sketch. Also, find an approximate value of the x-coordinate of that point (with 4
deci... | 4 | [
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-... | 14,383 | 14383 | |
double summation
March 30th 2009, 10:40 AM #1
Newbie
Joined
Feb 2009
Posts
20
double summation
Been trying to get this problem for a few hours. Been going through the book and online for some examples but haven't found anything that makes sense.
If someone could help me that would be gooood.
Co... | 4 | [
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0.0322265... | 14,384 | 14384 | |
Help with a second partial derivative, please
May 29th 2006, 06:14 AM #1
Junior Member
Joined
Apr 2006
Posts
25
Help with a second partial derivative, please
I am doing a chapter on bivariate calculus and so far have done about 30 problems without any mistakes. Yet I've come across one where I can't matc... | 5 | [
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GMAT Articles
Consider the following question:
N is a positive integer. When N is divided by 13, the remainder is 5. When N is divided by 46, the remainder is 31. What is the smallest possible value of N?
Before we examine the solution to this question, I’d like to set up this article by asking an easier question:
... | 4 | [
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-0.0... | 14,386 | 14386 | |
Help again
July 30th 2006, 02:38 PM #1
Junior Member
Joined
Jul 2006
Posts
25
Help again
Please explain how to solve this.
The product of two consecutive even integers is 168. Find the two integers.
Hint: Assume the first integer is x
Set up the equation first that satisfies the given condit... | 4 | [
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0.0108... | 14,387 | 14387 | |
Measuring the boundary of an irregular polygon
April 2nd 2009, 03:42 AM
rushhour
Measuring the boundary of an irregular polygon
Hi
I have been set a programming task where I need to determine the length of the boundary of an irregular polygon between 3 and 6 sides, I am not asking for the programming part (... | 4 | [
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... | 14,388 | 14388 | |
Matrix help
February 17th 2013, 08:59 AM
Tweety
Matrix help
A = $\begin{bmatrix} 1 & 1 & 0 \\0 & 2 & 1 \\-4 & -11 & -4 \end{bmatrix}$
find the smallest value of n > 0 such that http://mapleta7.eps.surrey.ac.uk:808...bgmdmigdij.gif
I need help on this question, I am suppose to solve it using matlab, how... | 5 | [
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0.024169921875,... | 14,389 | 14389 | |
Super-Liouville Theory from Superstring Theory in the Presence of Gauge Worldsheet Fields
ISRN High Energy Physics
Volume 2013 (2013), Article ID 364852, 5 pages
http://dx.doi.org/10.1155/2013/364852
Research Article
Super-Liouville Theory from Superstring Theory in the Presence of Gauge Worldsheet Fields
Laboratoir... | 4 | [
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-0... | 14,390 | 14390 | |
Image of bounded operator is closed
June 3rd 2010, 05:33 AM #1
Junior Member
Joined
Mar 2010
Posts
36
Image of bounded operator is closed
Let $X, Y$ be Banach spaces, $U \in B(X,Y)$ be given such that $\exists M \in [0, \infty)$ such that $\forall y \in \text{Im}(U), \exists x \in X$ such that $U(x) = y$... | 5 | [
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0.1015625,
0.... | 14,391 | 14391 | |
What kind of math problem is this?
[Date Index] [Thread Index] [Author Index]
What kind of math problem is this?
• To: mathgroup@smc.vnet.net
• Subject: [mg12130] What kind of math problem is this?
• From: Seth Chandler <SChandler@Cen... | 5 | [
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... | 14,392 | 14392 | |
Limits with trig values
September 27th 2009, 07:44 PM
oObutterfly-chaserOo
Limits with trig values
I'm having trouble with my AP Calculus homework dealing with trig limits. I get these long values and have no idea how to reduce them.
Example:
Limit as x approaches zero of cot(3x)/csc(2x)
I underst... | 5 | [
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0.0069274... | 14,393 | 14393 | |
[SOLVED] Construction problem(geometric mean)
Can someone help me with this: Construct line segment , which is a geometric mean of two given line segments.
Hi Garas, This is very simple. First, draw your two line segments end to end horizontally on your paper. A.......................B............C Next, construct the... | 4 | [
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Arzelą-Ascoli theorem
Hi Please, can some one give me lecture and exercises in Arzelą-Ascoli theorem ?? Thanks in advance!! Miss_Lolitta
Why would a miss-"lolitta" be interested in such messy stuff? :eek: Anyway. Here's one: Let $C^{0,a}$ be the set of Hölder continuous functions on $[0,1]$, with exponent $0<a\leq 1$.... | 5 | [
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solve equation
June 29th 2008, 07:50 AM #1
Junior Member
Joined
Jun 2008
Posts
48
solve equation
Hi everyone,
I would like to know if I did any mistake in my calculation?
Here is the question and my answer:
(a Using equation:
∫ (f(x))n f’(x) dx = 1/n+1(f(x))n+1 + c (n≠-1)
show th... | 5 | [
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Approximation Error and Tough Integral
February 19th 2013, 08:12 PM #1
Approximation Error and Tough Integral
Hello Everyone! Today We are asked to find $\int_{1}^{2} e^\frac{1}{x}dx$. We are given two option. First is by evaluating the definite integral itself or we can do numerical approximation using
both ... | 5 | [
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... | 14,397 | 14397 | |
Complete Controllability of Impulsive Fractional Linear Time-Invariant Systems with Delay
Abstract and Applied Analysis
Volume 2013 (2013), Article ID 374938, 7 pages
http://dx.doi.org/10.1155/2013/374938
Research Article
Complete Controllability of Impulsive Fractional Linear Time-Invariant Systems with Delay
Schoo... | 5 | [
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The probability that 901 coins have total value $100
Here's a cute little problem from Reddit:
Tough question for you guys. Let's say you have 901 coins that come out to exactly $100. What are the odds?
(Also
here
.)
Everyone there who gets a solution is assuming that all the possible coins are equally likely, whi... | 5 | [
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