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Calculus

- Elementary functions. Calculating limits, derivatives and integrals. Optimization problems
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Jan16-12 Greg Bernhardt
Please post any and all homework or other textbook-style problems in one of the Homework & Coursework Questions...
Feb23-13 09:24 AM
micromass
1 45,073
The principal value of 1/x is a generalized function/distribution. What is the derivative of it? Is it the...
Jun11-07 06:48 PM
DeadWolfe
1 3,561
Hi all A basic question here: I am deriving the equation for the expectation of a lognormal variable. This...
Jun16-07 11:58 AM
arildno
1 1,573
What is dx mean in intagral?
Jun19-07 09:29 AM
malawi_glenn
1 910
:rolleyes::rolleyes:
Jun23-07 03:45 AM
siddharth
1 1,137
Let be y=f(x) a differentiable function, my question is if we can define a basis on R^3 at every point using \partial...
Jun24-07 06:04 AM
matt grime
1 1,347
I have a problem with this simple (?) derivation u(f(t),t) = \frac{\partial }{\partial f(t)} \int_0^T \...
Jun29-07 05:46 AM
Klaus_Hoffmann
1 1,635
what is the difference between a linear approximation and a tangent line? my understanding is that the linear...
Jul2-07 04:25 PM
mathman
1 1,359
I'm going to be working in 4D, and I assume my metric is symmetric. So what I am interested in is an integral of the...
Jul4-07 08:21 AM
matt grime
1 1,089
Hi, I was wondering if I could get an answer to a question that has been bothering me all day today. Ok, so I got...
Jul9-07 10:25 PM
Gib Z
1 1,389
Is it possible to calculate the derivative of a function of the form \sum_{i=1}^n f(i) with respect to n. That...
Jul11-07 09:41 PM
lurflurf
1 2,042
If for a function space , we can define the scalar product of any given 2 functions as \int_{a}^{b}dx f^{*}(x)g(x)...
Jul14-07 08:26 PM
HallsofIvy
1 1,581
This is not a homework but it is a question in my mind.please guide me. Let X and Y be topological spaces,let f : X...
Jul17-07 10:28 AM
morphism
1 1,075
hi, my problem is to evaluate the n-th difference to be able to approximate the n-th derivative of a function f(x) at...
Jul18-07 09:06 PM
lurflurf
1 1,215
Hi, I'm trying to draw a Cardinal Spline and understand them - however I can't get my head around the formula. ...
Jul31-07 03:48 PM
hotvette
1 4,966
given a Polynomial or a trigonometric Polynomial K(z)= \sum_{n=0}^{N}a_{n}x^{n} and H(x)=...
Jul23-07 04:07 PM
mathman
1 1,166
The question is can we obtain the 'Borel sum' of an integral of f(x) from 0 to infinity as the Laplace transform of ...
Jul23-07 01:27 PM
Klaus_Hoffmann
1 1,206
I CAN'T SEEM TO GET THE ANSWER THAT IS CONSISTENT WITH MY UNDERSTANDING OF THE USE OF DOT AND CROSS PRODUCTS AND THE...
Jul31-07 07:06 AM
fopc
1 22,451
A function f(t) can be represented by the expansion f(t) = \frac{1}{2}A_{0} + A_{1}cos(\omega t) + A_{2}cos(2...
Aug1-07 04:26 PM
mathman
1 2,024
So if a function f:\to\mathbb{R} is differentiable, then then for each x\in there exists \xi_x \in so that...
Aug4-07 08:30 AM
MathematicalPhysicist
1 1,362
Let f be a differentiable complex valued function on R. If f is square integrable, then it is not the case that f(x)...
Aug4-07 09:33 PM
mathwonk
1 2,583
I am comparing theorem 10.6(c) and 10.14(a) in Apostol's Mathematical Analysis. My question is this: Are...
Aug10-07 04:59 PM
travis0868
1 2,109
Hey Im in the middle of modelling a logistic model off of population data but I am having a little bit of trouble....
Aug13-07 02:42 PM
HallsofIvy
1 4,682
hi everybody In this fall i am taking calculus III and planning to do contract honor with my professor. as a part...
Aug13-07 02:14 PM
eminent_youtom
1 2,688
How is it connected to more traditional anlysis. I view analysis as epsilon delta stuff. But topics in linear anlaysis...
Aug17-07 04:39 AM
HallsofIvy
1 3,632
if m(.) is a non-atomic measure on the Borel sigma-algebra B(I). I is some fixed closed finite interval in R. How...
Aug20-07 12:25 PM
EnumaElish
1 1,426
Hello everyone, I have taken up on reading a mathematical statistics book and have gotten stuck on the...
Sep1-07 03:55 PM
ZioX
1 17,919
A continuous random variable X has the density function f(x)=x for 0<x<1 2-x for 1 _<x<2 0 elsewhere. a....
Sep3-07 01:31 PM
HallsofIvy
1 1,396
Hello, I have an integral F(x) = \int\limits_a^x f(x) d(g(x)) and g(x) may and may not...
Sep4-07 11:21 AM
HallsofIvy
1 2,955
What does an equal sign with a straight line down the middle of it mean?
Sep5-07 04:23 PM
chroot
1 8,515
I have an upcoming exam, and I'm having trouble grasping some concepts. The things that are currently perplexing me...
Sep15-07 06:38 PM
bob1182006
1 7,810
I'm suppose to find the limit as x goes to infinity of / . L'Hopital's Rule does not work on here (it said so even...
Sep17-07 09:03 PM
niyati
1 2,739
Hi, my teacher gave us this problem, and he couldn't figure out why method was incorrect and why I got the answer I...
Sep19-07 06:18 AM
HallsofIvy
1 1,653
Find the point in the plane 3x+2y+z=1 that is the closest to the origin by minimising squared distance. (I hope I...
Sep21-07 07:00 PM
mathman
1 5,684
I am studying the abstract theory of measure and I was wondering how the Lebesgue case for real functions of a real...
Sep26-07 05:30 PM
quasar987
1 1,182
Is there any name for the functions for which |f(x+y)| \leq |f(x)| + |f(y)|?
Sep24-07 06:45 AM
fopc
1 1,078
does anyone know how to do this one? derivative of 1-e^2x????
Sep24-07 10:29 PM
hotvette
1 18,299
The fundamental theorem of calculus is basically the divergence theorem but dealing with a ball in R^1 instead of a...
Sep25-07 05:12 PM
genneth
1 1,457
the magnitude and direction of vector can be described without using refrence frame. (true or false) . Please explain...
Sep25-07 07:45 PM
AiRAVATA
1 1,454
Older textbooks on the Calculus of Variations seem to define the first variation of a functional \Pi as: \delta...
Sep27-07 10:46 AM
EnumaElish
1 4,303
What is the answer of \int\frac{1}{cos^2x}d(cos x)?
Sep27-07 03:09 PM
genneth
1 796

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