Question

Pake cara ya gan, yg mana aja terserah yg dikerjain

Answer 1

Y= x²  cos2x
dalil turunana rante - chain rule
dy/dx = (2x) cos2x + x² ( -sin2x . 2)= 2x cos2x - 2x² sin2x (D)

y=cosec² 2x  .....

y = 1/  sin² 2x =  sin·-²  2x ... dy /dx = -2 sin -³ 2x. (cos 2x) . 2 = 4 cosec² 2x . cos 2x / sin 2x

= 4cosec² 2x . cot x (C)