CASTI-89 TITANIUM · CALC89
nInt(
Approximates a definite integral numerically. Use it when an integral has no closed form or only a decimal value is needed.
Syntax
nInt(expr, var, lower, upper)
- Group
- Calculus
- Arguments
- Takes the expression, the variable, and the lower and upper limits.
- Availability
- Included
- Menu path
- F3 Calc ▸ nInt(
Example
| Input | Result |
|---|---|
| nInt(x^2,x,0,1) | 0.333333333333 |
Typing nInt(x^2,x,0,1) on the home screen and pressing ENTER returns 0.333333333333.
Keystrokes on the TI-89 Titanium
F30
The same key sequence inserts nInt( in Calc89, and the AI tutor shows it step by step on the on-screen keypad.
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