Turunan 3

Contoh 4 :
Turunan pertama dari

adalah

Jawab :















contoh 5
Tetukan turunan pertama dari f(x) = sin x

Jawab :






















Cara II :

Dengan memakai rumus
sin A – sin B = 2 cos ½ (A + B) sin ½ (A – B)
maka diperoleh









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