Question

http://math.stackexchange.com/questions/931921/find-the-particular-solution-of-u-x2u-y-4u-exy-satisfying-the-following-s

Answer 1

@BSwan my work and question is in the link

Answer 2

I need to go to bed because I have to go to school early tomorrow... ja mata. and.. @dan815 stop being lazy at pdes Rofl

Answer 3

@rational

Answer 4

ja mata :P

Answer 5

wait @rational knows pdes omg!!

Answer 6

yeah we both know xD
although i dint know that ppl know that i know :P

Answer 7

do you have skype bswan?

Answer 8

I need pde study buddies.

Answer 9

plzzzzzz....

Answer 10

or email

Answer 11

im bze these few months for skype sry :O
but here my email , ikram.atatreh@gmail.com
u might email me with pde doubts or questions

Answer 12

also @Kainui is good in this

Answer 13

thank you . I will use email and give links to my issues... damn it @kainui just show up. yo man I need help too fool! .

Answer 14

I haven't seen him in skype for a while wth *throws phone at Kainui

Answer 15

so I can just email you right @bswan

Answer 16

added to skype accept request

Answer 17

My computer broke and the replacement screen was broken too lol

Answer 18

k now I'm going to bed... @kainui shed some light while I sleep. oyasuminasai minna

Answer 19

I'm at the library pulling an all nighter though. I'll see what I can do.

Answer 20

well I NEED YOU MORE THAN EVER GUYS!!!!!!!!!!!!!! my book sucks

Answer 21

hmm I should give you #8 too @Kainui

Answer 22

I only got the first part of it I think which is show that there is no solution... dsaklfjkd blah blah

Answer 23

I'll attemp #8 again though... and see and comparee

Answer 24

8a. Show that the PDE $u_x=0$ has no solution which is $C^1$ everywhere and satisfies the side condition $u(x,x^2)=x$\\

8b. Find a solution of the problem in a which is valid in the first quadrant $x>0, y>0$\\

8c. Explain the results of a and b in terms of the intersections of the side condition curve and the characteristic lines.\\

Well basically for 8c the lines will intersect the characteristic lines more than once and that's a no no
for 8b, maybe I should solve PDE u_x=0 and find a solution that satisfies the first quadrant and for 8a I do have 0 = 0 towards the end due to the cancellation during that long characteristic change of variables thing. Anyway I'll try them again tomorrow after class. Now I really need to go to bed.

Answer 25

night... oh yeah I have to attempt the next section probs... at least I read it and I think it could be a bit easier than the pile of crap that I've been dealing with in the stackexchange link. I feel like using method of characteristics, but my class didn't learn it so damn.

Answer 26

btw the book I'm using is Basic Partial Differential Equations by Bleecker .. you can view most of the pages on google. roflz. night

Answer 27

Ok I'll check it out, I think I have to review how to do things by characteristics though, I kinda forget.

Answer 28

@ikram002p still stuck on the same pde problem ughhhhhh that's the one with the link

Answer 29

@kainui I am still stuck :(