1-calculate-F-a-0-pi-4-arctan-1-a-cosx-dx-2-find-the-valeur-of-0-pi-4-arctan-1-2-cosx-dx-

Question Number 71813 by mathmax by abdo last updated on 20/Oct/19

1) c a l c u l a t e F (a) = \int_{0}^{\frac{π}{4}} a r c t a n (1 + a c o s x) d x

2) f i n d t h e v a l e u r o f \int_{0}^{\frac{π}{4}} a r c t a n (1 + \sqrt{2} c o s x) d x