Âf(x)dx – Texas Instruments TI-84 User Manual
Page 134
Chapter 3: Function Graphing
131
3.
Press
| or ~ (or enter a value) to select the X value at which to calculate the
derivative, and then press
Í.
The cursor is on the solution and the numerical derivative is displayed.
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
f(x)dx
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 integral 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.