Recent content by Molina

I'm sorry but I don't understand, how i know a and b? I'm sorry I'm lost. I have the idea.. b is pi / 4 and a = 0 ? And f(x) = tan^2(k*pi/4n) ? ?

Explain me in this case please, is the first time I have to do one problem like this. Thank you

Homework Statement Calculate the limit with Riemann. Homework Equations \displaystyle\lim_{n \to{+}\infty}{\displaystyle\frac{pi}{4}\cdot{} \displaystyle\sum_{k=0}^n{tan^2(\displaystyle\frac{k\cdot{} pi}{4n})\cdot{}\displaystyle\frac{1}{n}}} The Attempt at a Solution I don't know how to...