December 2018 1 41 Report
Turunan pertama dari k(x) = cos x cotan x adalah k'(x) = . . . .
a. sin x (2 + cotan^2 x)
b. sin x (2 - cotan^2 x)
c. cos x (2 + cotan^2 x)
d. cos x (2-cotan^2 x)
e. cos x (cotan^2 x - 2)

*tanda ^2 dibaca "pangkat dua" atau "kuadrat"

Mohon jawaban peserta penjelasannya :)

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