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Messages - Yumeng Wang

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16
HA3 / Re: HA3-P1
« on: October 03, 2015, 06:21:10 PM »
Do we need to derive general solution for utt - c2uxx = 0 during exam??
Or we can just use it directly ?

17
Quiz 1 / Re: Quiz1-P1
« on: October 02, 2015, 11:13:39 PM »
I think the first one is semilinear because it depends on definition 2 in Chapter 2.1 in textbook. In this case, b=b (x, y) and I don't think similinear is type of linear. So I don't get why it is linear.

18
Quiz 1 / Quiz1-P1
« on: October 02, 2015, 07:41:46 PM »
(a)  ux + xuy = 0   non-linear linear homogeneous. V.I.
(b)  ux + uuy = 0  quasilinear

I am not sure of expressions of this two equations, but my answer for the first one is non-linear and the second one is quasilinear.

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