Question

integral 1+x^2/1+x^4 from 0 to infinity

Answer 1

\[\Large \int \limits_0^\infty \frac{1+x^2}{1+x^4}dx\]
is that the question?

Answer 2

yes it is

Answer 3

let\[t=x-\frac{1}{x}\]

Answer 4

\[\int_{0}^{\infty}\frac{1+x^2}{1+x^4} \text{d}x=\int_{-\infty}^{\infty}\frac{1}{t^2+2} \text{d}t\]

Answer 5

make sense?

Answer 6

oh yes...thank u

Answer 7

yw :)