tolong no. 30 sama cara mencarinya yaa

Turunan

f(x)= [√x  -  1 /(√x)]² = x + 1/x  -  2
f(x) = x + x⁻¹ - 2
f '(x) = 1 - x⁻²
f '(x) = 1 - 1/x²
f' (x)= (x² -1) / x²