Texas Instruments TI-83 Plus Manual Book page 10

1. To find the extreme values of the volume, set the first
derivative of V to zero.
V(x) = x(36-2x)
V(x) = 4x
V'(x) = 12x
2
x – 24x + 108 = 0
2. Now, if you find the roots of x
the critical points of the function.
3. Press
4. Select
5. Press any key to continue. The
6. Select
7. Enter the degree of the polynomial (
TI-83 Plus Polynomial Root Finder / Simultaneous Equation Solver Application
2
3 2
– 144x + 1296x
2
– 288x + 1296 = 0
to display a list of applications on your calculator.
. The information screen is displayed.
PolySmlt
Poly Root Finder
2
– 24x + 108 = 0, you will find
MAIN MENU
.
2
is displayed.
), and then press .
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