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

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SUMMARY

The differentiation of the function f(x) = 2x^(2/3)(3-4x^(1/3)) requires the application of the product rule. The correct derivative is obtained by applying the product rule as f' = g'h + gh', where g = 2x^(2/3) and h = (3-4x^(1/3)). The final expression for the derivative is f'(x) = (4/3)(x^(-1/3))(3-4x^(1/3)) + (1/3)(-4)(x^(-2/3)), which simplifies to (4/x^(1/3)) - (16/3) - (4/3)(x^(-2/3)). The mistake identified was the failure to multiply the second term by 2x^(2/3) during the differentiation process.

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Homework Statement


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


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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.
 
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Remember, the product rule is defined as [itex]f' = g'h + gh'[/itex]. When you used the product rule, you forgot to multiply the second term by [itex]2x^{2/3}[/itex].
 

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