kak tolong soal xi ips

Itu yaa maaf kalau salah

f(x) = 4√x / x = 4x^1/2 / x = 4x^(1/2 - 1) = 4x^-1/2
f'(x) = 4(-1/2) x^(-1/2 - 1)
= -2 x^-3/2
= -2 / x^3/2
= -2 / x√x
= -2 / x√x . √x/√x
= -2√x / x^2 ......... D