Diketahui fungsi u(x) = x2 + 5x – 2 dan v(x) = (2x + 1)2. Tentukan turunan fungsi-fungsi berikut!
1. f(x) = u(x) + v(x)
2. f(x) = u(x) – v(x)
3. f(x) = u(x) · v(x)
4. f(x) = u(x)/v(x)
Jawab:
u(x) = x2 + 5x – 2 → u’(x) = 2x + 5
v(x) = (2x + 1)2 → v’(x) = 2(2x + 1) . 2 = 4(2x + 1)
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