I have completely lost some sort of technique for this integral, could somebody help. thanks
$\displaystyle \int\frac{sin(x)}{cos^2(x)}dx$ I know the answer is $\displaystyle sec^2(x)$but I don't know how it was got?
I have completely lost some sort of technique for this integral, could somebody help. thanks
$\displaystyle \int\frac{sin(x)}{cos^2(x)}dx$ I know the answer is $\displaystyle sec^2(x)$but I don't know how it was got?