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

Feb2313 09:24 AM
micromass

1 
40,152 
I need help with this problem.
Find dy/dx if e^2x = sin(x+3y)
Any help would be great!
I began by taking the...

Nov2105 07:45 AM
courtrigrad

13 
1,718 
I'm doing a review in calc I to prepare for calc II. I'm now applications of derivatives (optimization). Okay so when...

Jan1006 04:24 AM
Demian^^

4 
1,718 
f(x) = x , if x is rational
= 0 , if x is irrational
on the interval
i just wanted to check if my...

May508 10:11 AM
HallsofIvy

1 
1,718 
f(x) = 3x + 2 and g(x) = x + 5
f but some how this equals 3x + 17? plz show me.
g I know this would equal 3x + 7
...

Aug3104 10:19 AM
Alkatran

3 
1,717 
I have these two queries regarding the fundamental theorems:
1. The fundamental theorem for divergences is given...

Aug3105 02:27 PM
aranyakam

5 
1,717 
Can we find the equation of a parabola when two points on it and the time of travel between the two points are...

Oct607 12:16 PM
HallsofIvy

2 
1,717 
i have seen it before and i coudn't answer.
if F is function such that fog=I(one to one function) for some g...

Oct1910 12:35 PM
furi0n

5 
1,717 
Hi, All:
I have a function f: ℂ>ℂ' , i.e., a complexvalued function (use ℂ,ℂ' to make a distinction between the...

Nov1911 04:02 PM
Bacle2

6 
1,717 
So basically, limits are essential in calculus. When you are taking a derivative, you are basically just taking a...

Mar307 12:23 PM
arildno

12 
1,716 
Hi, i need to get some examples of quasiconformal maps..do help!

Feb1208 08:42 AM
mathwonk

1 
1,716 
Ok my last post was trivial, but it led to this question
Assume f is unbounded and analytic in some domain D, and...

Mar811 06:27 PM
Hyperbolful

2 
1,716 
Hi,
In a euclidean space X with two subsets E and F, the subset E+F is defined as the collection of all x+y, where x ...

Oct606 05:10 AM
HallsofIvy

5 
1,715 
I would really like to get a jump on calculus before next semester when I take calculus.... The calc book that I am...

Jan911 05:01 PM
TylerH

14 
1,715 
Hi,all
My goal here is to show that the limit of a sequence a_n = sin n^1/n
i.e. lim _ sin n ^1/n does not...

Dec507 01:35 PM
rs1n

7 
1,714 
Solving the Laplace equation in Cartesian Coordinates leads to the 2nd order ODEs:
\frac{X''}{X}=k_1, \qquad...

Jan1412 02:40 PM
Apteronotus

4 
1,714 
Can someone please tell me if I have the correct answer for this one?
e^(5pi/4) = (1i)/(sqrt(2))
Thanks...

Sep2208 07:56 PM
HallsofIvy

3 
1,713 
In the below video from approx. 12:00 onwards while explaining the proof for Quotient Rule, Mr. Miller says that while...

Dec2811 11:12 AM
Devil Doc

12 
1,713 
I'm having trouble understanding where this concept comes from:
Step 1) If you start out with the following two...

Sep1709 04:35 PM
John Creighto

5 
1,712 
I just want to see if I got this correct. From what all I've read it seems that I have most of it understood, but eh,...

Sep1409 10:31 AM
rzaidan

3 
1,711 
What are the reasons for using washer meathod v.s cylindrical shells?
Cylindrical shells are much easier but there...

Feb909 05:18 PM
tinytim

1 
1,711 
I'm studying for a maths test.
I know that the second derivative of the position R(t) of a particle moving in the...

Mar1810 02:23 AM
tinytim

11 
1,711 
Hi  I'm trying to work out the following convolution problem:
I have the following integral:
...

Mar311 09:53 AM
thrillhouse86

2 
1,711 
The function of the type:
\int {(x^2 + 1)^{5/2}}x dx
This is simple to integrate but the trigonometric...

Mar2605 07:44 AM
dextercioby

4 
1,710 
From the following attachments I understand how the roots of the equation and the perturbation coefficients were...

Jun208 02:27 PM
HallsofIvy

3 
1,710 
The other day, I was thinking about Fourier series. Because eix is periodic, with period of 2 pi, we can use the...

Jan2513 10:29 PM
Boorglar

12 
1,710 
Hi there,
I was looking for something to levelup my knowledge from basic differentiation/integration (I'm a...

Aug1410 07:36 AM
eumyang

3 
1,709 
Mod note: These posts are orginally from the thread: http://www.physicsforums.com/showthread.php?t=626545
The...

Aug1012 12:26 PM
Bacle2

21 
1,709 
I'm in University Physics, and my prof. just gave us a lecture to make sure we're aware of how to use derivatives and...

Sep2108 10:28 AM
Troponin

19 
1,708 
Hey, all.
Anyway, I've been looking at books and sources online, and the only counterexample to the wrongly stated...

Jun111 12:36 PM
Metaleer

2 
1,708 
Yes, another of these. How do you decompose (z3+1)/(z(1z)2) ?
I've tried A/z + B/(1z) + (Cz+D)/(1z)2 and a slew...

Sep2411 10:45 PM
Dickfore

12 
1,707 
In the Principles of Quantum Mechanics, Dirac derives an identity involving his delta function: xδ(x)=0. From this he...

Nov2811 11:27 PM
Hurkyl

13 
1,707 
Hello all
I need help with the problem attached below. I tried proof by induction, but cannot prove it. P(n) is a...

Nov2304 06:32 PM
mathwonk

1 
1,706 
Hello!
I am looking for a value of an integral
\int^{\infty}_0 {r^{3\epsilon} \over (r^2+N^2)^2}dr
I have...

Mar809 03:58 PM
Santa1

5 
1,706 
Can the limit comparison test work on alternating series? I looked at the conditions online and it said that the...

Mar310 09:21 PM
Anonymous217

12 
1,706 
How do I solve:
lim =0
x1

May1705 03:15 PM
dextercioby

1 
1,704 
Hello I have a question here which I've been thinking for quite sometime. And I am still very puzzled. It goes:
...

Sep2406 07:54 AM
jpr0

5 
1,704 
Hi all,
Does anyone know of a couple of good links I could view that would explain limits?

Feb108 10:45 AM
VietDao29

9 
1,704 
Hi I'm having real trouble with this question. Any hints or ideas would be great.
Give an algorithm which depends...

Nov604 12:32 AM
cateater2000

0 
1,703 
I could use some help with this question:
Derive the geometric series representation of 1/(1x) by finding a0, a1,...

Oct2706 08:05 AM
Hurkyl

5 
1,703 
Suppose that \{g_n\}_{n=1}^\infty is a sequence of positive continuous functions on I=, \mu is a positive Borel...

Dec908 08:39 PM
MarketPantry

0 
1,703 