Let f(x) = 4x5/4 + 2x3/2 + 4x. Find the following. (a) f '(4)
- Thread starter doe123
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pka
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Is your function \(\displaystyle \large f(x) = 4\sqrt[4]{{{x^5}}} + 2\sqrt {{x^3}}+4x~? \). If it is then your really need learn to post.
Steven G
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What is the derivative of ax^n? You really need to know this. You also need to know how to multiply a whole number by a fraction. If you do not know how to do that, then you should be taking an arithmetic course. You need to know how to subtract 1 from a fraction. Hint (a/b) - 1 = (a-b)/b. Think about how you can get (a-b)/b easily!!!!! Then you need to know that the derivative of a sum is the sum of the derivative, Lastly you need to know how to evaluate the derivative when x=4.
You claim you got an answer. Wonderful!!! Now please show us your work so that we can see where you went wrong.