Question

Diketahui fungsi f(x) = 4cos x + 2sin 2x
Nilai f’(1/6 π) = …

Answer 1

F'(1/6Π) = 1/6 × 180°
= 30°
f(x) = 4×cos 30° + 2×sin2×30°
= 4× ½√3 + 2×sin60°
= 2√3 + 2×½√3
= 2√3 + √3
= 3√3