Question

Tentukan f'(3) jika f(x)=√x²-8​

Answer 1

f(x) =(x²-8)^1/2

f'(x) = 1/2 (x² - 8) ^ -1/2 . 2x

f'(3) = 1/2 ( 3² -8)^-1/2 . 2(3)

f'(3) = 1/2 (1)^-1/2 . 6

1^-1/2 = 1

f'(3) = 1/2 . 6

f'(3) = 3

Answer 2

Jawab:

f(x) = √x²-8

f'(x) = 1/2(x² - 8)^-1/2 . 2x

f'(3) = 1/2 x 1/√(3² - 8) . 2(3)

f'(3) = 1/2 . √1/1 . 6

f'(3) = 1/2 x 6

f'(3) = 3

Jadi turunannya adalah 3