TI-83 Plus Function Graphing 153
To move to the same x-value for other selected functions, press } or †.
To restore the free-moving cursor, press | or ~.
‰f(x)dx
‰f(x)dx (numerical integral) finds the numerical integral of a function in a
specified interval. It uses the fnInt( function, with a tolerance of H=1âL3.
To find the numerical derivative of a function, follow these steps.
1. Select 7:‰f(x)dx from the CALCULATE menu. The current graph is
displayed with Lower Limit? in the bottom-left corner.
2. Press } or † to move the cursor to the function for which you want
to calculate the integral.
3. Set lower and upper limits as you would set left and right bounds for
zero. The integral value is displayed, and the integrated area is
shaded.
Note: The shaded area is a drawing. Use ClrDraw (Chapter 8) or any action
that invokes Smart Graph to clear the shaded area.