- #1
Andy21
- 20
- 0
Homework Statement
The volume of a box is given by V=4x^3 -66x^2 +216x. Explain why there is only one value of x for which V is stationary?
Homework Equations
The Attempt at a Solution
dV/dx = 12x^2 -132x +216 at a stationary point x^2-11x+18=0 so x=2 or 9
Last edited: