Question

solve the DE using the exact method:

y^2dx - x^2dy=0

Answer 1

how about the solution of the problems u posted earlier?u got it?

Answer 2

p(x,y)=y^2
Q(x,y)=-x^2

Answer 3

yeh got them

Answer 4

these arent exact......they are spearable but it says to solve using exact method

Answer 5

but they can be made exact if we multiply the eq with integarting factor

Answer 6

again the given eq is not exact :)

Answer 7

yeh but u cant get the integrating factor to be of one variable so that method wont work

Answer 8

yea right

Answer 9

so its impossible to solve using the exact methods

Answer 10

ok lets find the integrating factor

Answer 11

http://www.sosmath.com/diffeq/first/intfactor/intfactor.html

Answer 12

oh we cant find an integrating factor, darn

Answer 13

so use seperable equations , i get dx/x^2 = dy/y^2