Question

por favor me ayudan a resolver ∫ x√x²-1 dx

Answer 1

∫ x√x²-1 dx 

u = x²-1
du = 2x dx
du/2 = x dx

(1/2)∫√u du = (1/2)(2/3)√(x²-1)³ + C = (1/3)(√(x²-1)³) + C