Quotient Derivative and Minima Maxima

  • Thread starter zak100
  • Start date
  • #1
462
11

Homework Statement


Find out the quotient derivative i.e. the derivative of polynomial upon polynomial and then find the minima and maxima.[/B]

##W\left(z\right)=\frac{{4z+9}}{{2-z}}##

Homework Equations



##\left( \frac{f}{g} \right)' = \frac{f'\,g - f\,g'}{g^2}##

The Attempt at a Solution


##W'\left(z\right)=\frac{{4\left({2-z}\right)-\left({4z+9}\right)\left({-1}\right)}}{{{{\left({2-z}\right)}^2}}}##
##=\frac{{17}}{{{4-4z+z^2}}}##

I have found the quotient derivative. Some body please help me how to find the minima and maxima

Zulfi.
 
Last edited by a moderator:

Answers and Replies

  • #2
kuruman
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How does one normally find the maxima and minima? Also, try plotting this function and see what you get.
 
  • #3
34,825
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Thread moved. Questions about derivatives should be posted in the Calculus section, not in the Precalculus section.
 
  • #4
462
11
Hi,
I can't find the thread.

Zulfi.
 
  • #7
462
11
Hi,
I received an email that I got a reply from RPinPA . His reply is in my email but not here.

Zulfi.
 

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