Help! This is linear algebra & differential equation question: basically this time i am looking for Not Quite Exact solution.

Question

adunb8 · Answer

i got up to there plugging in x^mY^n inside but i dont quite see how he put (n+2)xy^n+1 + 3(n+3)x^m+1yn+3

anonymous · Answer

I'm in Diff EQ right now too and this hurt my head. Hopefully somebody can help you with this.

anonymous · Answer

I got lost at the same place

adunb8 · Answer

i dont know how he took out those numbers..

anonymous · Answer

Oh wait... n+2 and n+3 are part of the derivative when you do y^n+3. He brought he exponent down and then subtracted one, just like the normal differentiating step.

anonymous · Answer

Do you see what I mean...?

anonymous · Answer

$$x ^{n+3}\rightarrow (n+3)x ^{n+2}$$

adunb8 · Answer

oh doing the derivative i see!!! haha

anonymous · Answer

I don't know what is going on at the bottom...?

anonymous · Answer

of the page

adunb8 · Answer

hm.. he just solved for n and m...

anonymous · Answer

I see. Diff EQ is a confusing class. memorize little, but master manipulation.

adunb8 · Answer

yeah manipulation .

adunb8 · Answer

what happend to the m on x^m when we do dM/dy?

adunb8 · Answer

oh i see at the bottom you know how it says (n+2)x^my^n+1 after we do the dM/dy ? well i think we want to find coefficent in the front so on the bottom the n+2 = m came from there =)