MathematicsIf y = 3 cos 4x, dy/dx equals If y = 3 cos 4x, dy/dx equals A. 6 sin 8x B. -24 sin 4x C. 12 sin 4x D. -12 sin 4xCorrect Answer: Option DExplanationy = 3 cos 4x dy/dx = 3x -4 sin 4x = -12sin 4xFacebookTwitterRedditPinterestEmailLinkedInWhatsApp