Question 1177027
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The graph of the profit function is a concave down parabola. The *[tex \Large x]   coordinate of the vertex of the parabola is the input number required to maximize the function.


The *[tex \Large x]-coordinate of the vertex of *[tex \Large \rho(x)\ =\ ax^2\ +\ bx\ +\ c] is given by *[tex \Large \frac{-b}{2a}]

																
John
*[tex \LARGE e^{i\pi}\ +\ 1\ =\ 0]
My calculator said it, I believe it, that settles it
*[illustration darwinfish.jpg]

From <https://www.algebra.com/cgi-bin/upload-illustration.mpl> 
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