Here's the question you clicked on:
shaqadry
integrate e^(x-1/x) / x^2 dx
let x-1/x = u. Solving for du takes care of the denominator.
first, simplify for (x-1)/x = x/x - 1/x = 1 - 1/x = 1 - x^(-1) u = 1 - x^(-1) du = x^(-2) dx or du = dx /x^2
wait, which one ur problem : |dw:1361528752446:dw|
the first, or the last one
the second one. you just solved my question. already got the answer. thank you very much!! :)