paigeypaigey2133 paigeypaigey2133 15-02-2024 Mathematics contestada What is the derivative of f(x) = cos^4 x - 2x^2? A) 4cos^3 x - 4x B) -4cos^3 x + 4x C) -4cos^3 x - 4x D) 4cos^3 x + 4x