Integral b^x - Math.com - World of Math Online
1. Proof Strategy: Use the e u du = e u + C since e ln b = b, b x dx = [ (e ln b) x] dx = e (ln b) x dx set u = (ln b) x then du = (ln b) dx substitute... = e u (du / ln b) = (1 / ln b) e u du solve the integral... = (1 / ln b) ( e u + C )...