tentukan turunan fungsi berikut : a. f(x) = ( 4x½-x⅔)(2x⅔-√x) b. f(x) = 4x⅔ (x⁴-x³+x²)

a f(x) = (4x½-x^3/2)(2x^3/2-√x)
f(x) = 8x² - 4x - x³ + x²
f'(x) = 18x-4-3x²

b. f(x) = 4x^3/2 (x⁴-x³-x²)
f(x) = 4x^11/2 - 4x^9/2 - 4x^7/2
f'(x) = 22x^9/2 - 18x^7/2 - 14x^5/2
atau
f'(x) = 22x⁴√x - 18x³√x - 14x²√x