
Please post any and all homework or other textbookstyle problems in one of the Homework & Coursework Questions...

Feb2313 09:24 AM
micromass

1 
46,617 
Dear friends, I have been told that if ##\{a_n\}_{n\in\mathbb{N}}##, ##\{a_{n}\}_{n\in\mathbb{N}^+}##,...

T 04:10 AM
DavideGenoa

2 
125 
Say we have a function that is defined as y=3 except at x=2 and 5 where there are two vertical asymptotes.
would this...

Y 06:26 PM
DrewD

3 
185 
Hi I need help regarding following
can I write following partial derivative wrt x multiplied by Ax
(∂A)Ax...

Y 06:12 PM
Fredrik

3 
123 
Hi all,
Is it possible to determine the volume of a shape where, in the x and y dimensions, the shape is described...

Y 04:04 PM
labeattie

2 
120 
so suppose i have a wire given parametrically by C(t)=x(t),y(t),z(t), and i run a current of I amps through it. to...

Y 03:25 PM
bluntwcrackrap

5 
161 
Is there some way we can apply divergence (Gauss') theorem for an open surface, with boundaries? Like a paraboloid...

Y 11:09 AM
Blazejr

1 
131 
are nonelementary integrals implicit functions?
ie, when we do implicit differentation, we get an explicit...

Sep1714 03:40 PM
mathman

1 
115 
Hello Folks,
I am solving a limit proof that has the following attached solution.
Question: Assume all sn ≠ 0....

Sep1714 07:31 AM
PeroK

4 
152 
I'm confused over two different types of integral notation
1) ∫ (expression) dx
and
2) ∫dx (expression)
...

Sep1614 09:01 PM
bluntwcrackrap

4 
153 
Is there a way to distinguish between rational functions that have the same limit at both ends and those that don't? I...

Sep1614 07:01 AM
pwsnafu

6 
223 
∫(2x+6)/sqrt(54xx^2)
I have 2/3(lntan(theta)+sec(theta)3cos(theta)) where x=sin^1((x+2)/3)

Sep1514 10:28 AM
Rachael95

2 
151 
Hello.
Let us say that we have a graph f(x)=2x when x does not equal 3, and f(x)=undefined when x=3
The limit of...

Sep1414 04:33 PM
CuriousBanker

9 
219 
I would like to ask for help solving this problem. I've been at this problem for a few hours without making any...

Sep1414 02:34 PM
PlayingCatchUp

2 
160 
So, a while back i read about this idea, but i cant find it anymore, so i was wondering if anybody else knows about...

Sep1414 11:14 AM
bluntwcrackrap

4 
418 
Hey. I'm new to the forum and I was hoping you could help me solve this integral. I was searching for a clue on...

Sep1414 04:09 AM
phion

9 
557 
Today was our first lesson in our high school's accelerated calculus class. The class is our school's most second...

Sep1314 11:48 AM
PlayingCatchUp

5 
441 
So my question is regarding the gradient of a function. Suppose we have a function expressed In cylindrical...

Sep1214 04:43 PM
WWGD

3 
302 
What is taylor formula and how it is used in calculators?

Sep1214 06:12 AM
FactChecker

4 
397 
Hello!
I'm having some trouble determining, when trying to find the area between two curves, when to integrate with...

Sep914 10:32 PM
SteamKing

1 
277 
What wrong with my calculation.the problem is from the attachment.
It keeps saying:
NMinimize::nnum: "The function...

Sep914 04:52 PM
gaby287

3 
194 
You know that the problem of calculus of variations is finding a y(x) for which \int_a^b L(x,y,y') dx is stationary....

Sep914 12:28 AM
julian

10 
545 
Hello,
To measure the atomic force with an AFM. One can use the frequency shift of a cantilever. This change of...

Sep814 09:14 PM
pierebean

2 
232 
Several questions I have been thinking about... let me know if you have thoughts on any of them I added numbers to for...

Sep714 12:24 PM
wotanub

2 
365 
Hello everybody,
I'm currently reading the book Special Relativity in General Frames by Gourgoulhon. There,...

Sep614 05:02 AM
Incnis Mrsi

10 
406 
I'm interested to find out how many people would agree on several quick solutions:
10X = 4X
1) X = 0
2) 10 =...

Sep514 09:57 AM
Mark44

2 
257 
For this function
y=\sqrt{2ln(x)+1}
if I use the chain rule properly, should I be getting this answer?
...

Sep514 01:07 AM
Mark44

10 
555 
I have a small confusion about functions and variables. So, on doing a bit of reading, a linear transformation is a...

Sep414 11:19 AM
micromass

9 
425 
Hi,
Is the following integral well defined? If it is, then what does it evaluate to?
\int_{1}^{1} \delta(x)...

Sep414 08:32 AM
Incnis Mrsi

11 
538 
Hi,
I am struggling for some time to solve the following integral:
$$
\int_{n}^{Nn} \left(...

Sep414 08:12 AM
Incnis Mrsi

2 
528 
Hi! I am taking a second look on fourier transforms. While I am specifically asking about the shape of the fourier...

Sep414 07:50 AM
Incnis Mrsi

3 
411 
Hi. Is using the LeviCivita symbol to calculate crossproduct combos like A x (B x C) allot faster than just using...

Sep414 04:55 AM
Incnis Mrsi

3 
453 
I asked to differentiate the given function using exponential function
with sin(√3t + 1) I turned it into Im
...

Sep414 01:42 AM
sozener1

2 
365 
when differentiating
e^(at) * (cos(bt) + isin(bt))
are you able to use product rule to find the derivative...

Sep214 07:03 AM
HallsofIvy

2 
314 
How do I perform this integration:
\int \left (\frac{dy}{dx}\right)^{2} dx
Thanks!

Sep114 04:58 PM
Cruikshank

12 
1,227 
Let a,b are constants.
a=\int_{∏}^∏ f(x)\,dx
and
b=\int_{∏}^∏ {g(x)f(x)}\,dx,
Then by integration...

Aug3114 03:55 PM
mathman

5 
444 
Given: cos(x)\frac{1}{x}
Find \frac{dy}{dx}:
Now I know... \frac{dy}{dx} of cos(x) = sin(x)
and...

Aug3114 12:18 PM
Shinaolord

10 
347 
Hi members,
see attached Pdf file.
For a<0,write b=a and let x=bt.Then
My question:
how becomes the...

Aug3014 07:41 PM
HallsofIvy

1 
312 
I was playing around with some simple differential equations earlier and I discovered something cool (at least for...

Aug3014 07:20 PM
paradoxymoron

4 
535 
So, as i understand, the geometrical meaning of this type of integral should still be the area under the curve,...

Aug3014 03:39 PM
Siddartha

6 
462 
My textbook says the extreme value theorem is true for constants but I don't buy it. I mean I suppose that every...

Aug2914 12:22 AM
Austin

9 
423 