Find the derivative of the function below. how would i do this one?
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Originally Posted by mathaction Find the derivative of the function below. how would i do this one? Hello,
first rearrange the equation:
You are supposed to know that . Now use product rule to derivate this function: . Factor this term: The common factor is
thanks...what about these two...
If f(x) = (7x + 8)(6x - 5), find f '(x) and f ''(x).
Originally Posted by mathaction thanks...what about these two...
If f(x) = (7x + 8)(6x - 5), find f '(x) and f ''(x). hi,
1. rearrange and use product rule:
2. Don't expand the brackets.
3. Do yourself and do us a favour: If you have a new question start a new thread because nobody will notice "from outside this thread" that you have an other problem to solve.
Last edited by earboth; October 2nd 2007 at 07:24 AM.
Hello, mathaction! Evidently, earboth despises the Quotient Rule . . .
We have: .
Multiply top and bottom by
Therefore: . If , .find and
With such a simple product, I would multiply it out . . .
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