- #1
uman
- 352
- 1
Hi,
I need help evaluating the following integral by integration by parts: [tex]\int(a^2-x^2)^n\,dx[/tex]. Specifically I am supposed to prove the following formula: [tex]\int(a^2-x^2)^n\,dx=\frac{x(a^2-x^2)^n}{2n+1}+\frac{2a^2n}{2n+1}\int(a^2-x^2)^{n-1}\,dx+C[/tex] Any hints would be appreciated.
Also, does anyone have any general tips for learning how to do these things? I understand the principle behind integration by parts but I just can never seem to decide how to go about solving them. I'm learning from Tom Apostol's book and this is by far the hardest chapter so far for me as far as the exercises go even though other chapters were much more difficult to understand conceptually.
I need help evaluating the following integral by integration by parts: [tex]\int(a^2-x^2)^n\,dx[/tex]. Specifically I am supposed to prove the following formula: [tex]\int(a^2-x^2)^n\,dx=\frac{x(a^2-x^2)^n}{2n+1}+\frac{2a^2n}{2n+1}\int(a^2-x^2)^{n-1}\,dx+C[/tex] Any hints would be appreciated.
Also, does anyone have any general tips for learning how to do these things? I understand the principle behind integration by parts but I just can never seem to decide how to go about solving them. I'm learning from Tom Apostol's book and this is by far the hardest chapter so far for me as far as the exercises go even though other chapters were much more difficult to understand conceptually.