Решение
∫(9x+2)^17dx = (1/9) * ∫(9x+2)^17d(9x+2) = (1/9)*[(9x+2)¹⁸ / 18] + C=
(9x+2)¹⁸ / 162 + C
∫3^(x+1) dx = ∫3^(x+1)d(x+1) = 3^(x+1) / ln3 + C
∫-3dx/sin^2 x = 3*ctgx + C
∫(7x-1)^23 dx =(1/7)* ∫(7x-1)^23 d(7x-1) = (1/7)*[(7x-1)²⁴]/24 + C =
= (7x-1)²⁴ / 168 + C