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26 September, 06:21

If f (x) = (5x^3 - 4) ^4, then what is f ' (x) ?

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  1. 26 September, 06:42
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    You apply the rule to put the exponent in front, and lower it by one. But since this is a nested expression, you apply it twice:

    4 * (5x^3-4) ^3 * 3*5x^2 =

    60x^2 (5x^3-4) ^3
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