find-the-value-of-0-cos-x-2n-1-x-2-1-dx-and-0-sin-x-2n-1-x-2-1-dx-

Question Number 25765 by abdo imad last updated on 14/Dec/17

f i n d t h e v a l u e o f \int_{0}^{\infty} c o s (x^{2 n}) {(1 + x^{2})}^{- 1} d x a n d \int_{0}^{\infty} s i n {(x^{2 n})}^{} {(1 + x^{2})}^{- 1} d x