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Topics - Yumeng Wang

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APM346--Lectures / Clarification about section 2.6
« on: October 03, 2015, 01:05:49 PM »
After I read section 2.6 of online textbook, I find out there are two places need professor to clarify.
1. After equation (7), you have written
   "Therefore, Ï•(x+ct) and ψ(x−ct) are defined respectively as x+ct>0 (which is automatic as x>0,t>0) and x−ct<0 (which is fulfilled only as   x>ct)."  -- Indeed (PS. Don't use red--I use it)
    Should the equation with read color be x−ct>0?
2. Picture "Fig-2.6.2" cannot be displayed. After I checked code of the website, it displayed 404 ERROR (page not found).
    Without this picture, I cannot quite understand context in " 1D Wave equation on the finite interval ". 

Was wrong address for an image. Fixed

Thanks for your assistance.

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.

HA1 / HA1-P3
« on: September 26, 2015, 09:22:18 PM »
This is what I get for question3(d). I used method learned from MAT244 to solve integral linear equation
Sorry for hand writing.

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