let-give-1-lt-a-lt-b-and-I-0-pi-a-b-du-x-cosu-dt-find-the-value-of-0-pi-ln-b-cost-a-cost-dt-

Question Number 28444 by abdo imad last updated on 25/Jan/18

l e t g i v e 1 < a < b a n d I = \int_{0}^{π} \int_{a}^{b} \frac{d u}{x - c o s u} d t f i n d t h e

v a l u e o f \int_{0}^{π} l n (\frac{b - c o s t}{a - c o s t}) d t .