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### Messages - Ian Kivlichan

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16
##### Home Assignment 7 / Re: Problem 3
« on: November 19, 2012, 09:31:27 PM »
Hopeful solutions attached!

(part 3)

17
##### Home Assignment 7 / Re: Problem 1
« on: November 19, 2012, 09:30:53 PM »
Hopeful solutions attached!

(Essentially the same as Fanxun's, but with exponential instead of sines and cosines.. the difference is trivial.)

18
##### Home Assignment 7 / Re: Problem 4
« on: November 19, 2012, 09:30:33 PM »
Hopeful solutions attached!

Note that for 4.b), we require that as r goes to infinity, u goes to 0, which forces $A_0 = 0$.

19
##### Home Assignment 7 / Re: Problem 3
« on: November 19, 2012, 09:30:20 PM »
Hopeful solutions attached!

(parts 1,2)

20
##### Home Assignment 7 / Re: Problem 2
« on: November 19, 2012, 09:30:00 PM »
Hopeful solutions attached!

For 2.b), the ODE is exactly the same, but we switch the sign of k^2 u.

21
##### Home Assignment 7 / Re: Problem 1
« on: November 19, 2012, 09:20:53 PM »
Are we supposed to use spherical coordinates for this question? If so, should r be replaced with rho?
You can call the variables whatever you feel like - it makes no difference.

22
##### Home Assignment 7 / Re: Problem 4
« on: November 19, 2012, 11:19:38 AM »

23
##### Home Assignment 7 / Problem 4
« on: November 19, 2012, 03:29:55 AM »
For Problem 4, it seems the solution can only defined up to a constant - is that alright?

24
##### Term Test 2 / Re: TT2--Problem 4
« on: November 15, 2012, 11:46:03 PM »
Hopeful solution attached!

25
##### Term Test 2 / Re: TT2--Problem 1
« on: November 15, 2012, 10:38:38 PM »
Chen Ge, in 1.b) I'm not sure you can have the derivative of f since it isn't differentiable.. :S

26
##### Term Test 2 / Re: TT2--Problem 1
« on: November 15, 2012, 10:31:55 PM »
Hopeful solutions to both parts attached!

27
##### Term Test 2 / Re: TT2--Problem 5
« on: November 15, 2012, 10:31:07 PM »
Hopeful solution attached!

28
##### Term Test 2 / Re: TT2--Problem 2
« on: November 15, 2012, 10:30:24 PM »
Hopeful solution to part c attached!

EDIT: Was not originally attached?

29
##### Term Test 2 / Re: TT2--Problem 3
« on: November 15, 2012, 10:30:00 PM »
Hopeful solution attached!

EDIT: was not originally attached..?

30
##### Home Assignment 6 / Re: Problem 2
« on: November 07, 2012, 09:35:05 PM »
Aida: How did you do the integral?

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