Question

If I = ∫(dx/√(2x³ - 9x² + 12x + 4) for x ∈ [1, 2], then:

(1) 1/9 < I² < 1/8

(2) 1/16 < I² < 1/9

(3) 1/6 < I² < 1/2

(4) 1/8 < I² < 1/4

Answer 1

Answer is (1) 1/6 < I² < 1/8

Answer 2

Answer is (1) 1/6 < I² < 1/8