- #1
rocomath
- 1,755
- 1
Ok wow, I can't solve this :(
[tex]\int\frac{x^3e^{x^2}}{(x^2+1)^2}dx[/tex]
I have let u equal almost everything possible.
[tex]u=x^2[/tex]
[tex]d=2xdx[/tex]
[tex]u=e^{x^2}[/tex]
[tex]\ln u=x^2[/tex]
[tex]\frac{du}{u}=2xdx[/tex]
[tex]u=x^2+1 \leftrightarrow u-1=x^2[/tex]
[tex]\ln u=\ln{(x^2+1)}[/tex]
[tex]\frac{du}{u}=\frac{2xdx}{x^2+1}[/tex]
[tex]\int\frac{x^3e^{x^2}}{(x^2+1)^2}dx[/tex]
I have let u equal almost everything possible.
[tex]u=x^2[/tex]
[tex]d=2xdx[/tex]
[tex]u=e^{x^2}[/tex]
[tex]\ln u=x^2[/tex]
[tex]\frac{du}{u}=2xdx[/tex]
[tex]u=x^2+1 \leftrightarrow u-1=x^2[/tex]
[tex]\ln u=\ln{(x^2+1)}[/tex]
[tex]\frac{du}{u}=\frac{2xdx}{x^2+1}[/tex]