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## Homework Statement

differentiate f(x) = [2x^(2/3)][3-4x^(1/3)]

## Homework Equations

## The Attempt at a Solution

f'(x) = (4/3)(x^(-1/3))(3-4x^(1/3)) + (1/3)(-4)(x^(-2/3))

= 4x^(-1/3)-(16/3)-((4/3)(x^(-2/3)))

= (4/x^(1/3))-(16/3)-(4/3(x^(-2/3)))

I'm pretty sure I've made a mistake, but I can't find it.