daviddeanlan daviddeanlan 22-02-2024 Mathematics contestada Let f be the function given by 3x ƒ(x) = 3sin(²x) – 4cos(³x). For 0 ≤ x ≤ 7, f is increasing most rapidly when x = (A) 0.823 (B) 1.424 (C) 1.571 (D) 3.206