math
posted by tina .
(Px – 20) (100 – 2 Px + Pyg)
Differentiating with respect to P we get
100 – 4Px + Pyg + 40 = 0
I don't 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??

Pyg will be treated as a constant.
It doesn'matter how you multiply it out.
Px*1002Px^2+PxPyg2000+40Px+20Pyg=f
1004Px+Pyg+40=0 
How do the 2000 and 20pyg cancel out...the first pyg is still there?
Respond to this Question
Similar Questions

math help, correction
Anna has 12 bills in her wallet, some $5 and some $10. The total value of the bills is $100. HOw many of each bill odes Anna have? 
math
how do i change 3.75 into a fraction simple or improper fraction? 
statistics
A professional basketball player has embarked on a program to study his ability to shoot foul shots. On each day in which a game is not scheduled, he intends to shoot 100 foul shots. He maintains records over a period of 40 days of … 
tina
(100 – 2Px + 1Py) (Px 20) Now, take the derivative of the above with respect to Px to get the following first order condition : 100 4 Px + Py +40 = 0 When i try to multiply and then take the derivative of the top part out I keep … 
Calculus
The cost of producing x units of a certain commodity is C(x)=1000+5.70x+0.7x^2 . What is the average rate of change of C with respect to x when the production level is raised from x = 100 to x = 120 and when the production level is … 
math
In this question do I add, subtract, or multiply the exponents? 
algebra
assume x > 0. what percent of 8x is 5x? 
precalc
I don't understand how to do these w/o calc. I tried to write it in a way that will make someone understand how to read it. Hope I typed it clear enough.Thanks so much for the help anyone! How to find the exact value of logarithm: … 
math
I do't understand what this is. how do I solve or simplify 100^12/100^8? 
math
explain and demonstrate how to change 4/20 into a percent there are two ways we can work this out 4/20 times by 5 overall to get it out of 100, becomes 20/100. or you can do 4/20 then times that by 10 or 20 x what = 100?