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February 1, 2015

Posted by **tina** on Monday, March 14, 2011 at 7:41am.

Differentiating with respect to P we get

100 – 4Px + Pyg + 40 = 0

I dont understand how this is calc... whenever I multiply through and take the deriv I get another answer. Do you first multiply Px through then 20??

- math -
**bobpursley**, Monday, March 14, 2011 at 7:49amPyg will be treated as a constant.

It doesn'matter how you multiply it out.

Px*100-2Px^2+PxPyg-2000+40Px+20Pyg=f

100-4Px+Pyg+40=0

- math -
**tina**, Monday, March 14, 2011 at 7:53amHow do the 2000 and 20pyg cancel out...the first pyg is still there?

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