Posted by Ben !!!HELP!!! on Sunday, November 25, 2007 at 9:29pm.
I have to determine the price that needs to be charged to obtain the largest revenue.
q=p^2+33p+9 so
R=p(p^2+33p+9) or =p^3+33p^2+9p
I then need to take the derivative
R'=3p^2+66p+9
Now I somehow need to solve for p to determine my price to obtain my largest revenue. How do I do this.

Calc w/ Business  economyst, Tuesday, November 27, 2007 at 9:00am
To find a maximum, set your marginal revenue (R') equal to zero. Now then, R' is a quadradic equation. So, use the quadradic formula.
b + sqrt(b^2+4ac) / 2a

Calc w/ Business  economyst, Tuesday, November 27, 2007 at 9:12am
my bad. it's 4ac in the quadradic, not +4ac
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