CASTI-89 TITANIUM · CALC89
∫(
Integrates an expression with respect to a variable. Without limits it returns an antiderivative; with lower and upper limits it returns the exact definite integral.
Syntax
∫(expr, var[, lower, upper])
- Group
- Calculus
- Arguments
- Takes the expression, the variable of integration and optional lower and upper limits.
- Availability
- Pro feature in Calc89
- Menu path
- F3 Calc ▸ ∫(
Example
| Input | Result |
|---|---|
| ∫(x,x) | x2/2 |
Typing ∫(x,x) on the home screen and pressing ENTER returns x2/2.
Keystrokes on the TI-89 Titanium
2ND∫
The same key sequence inserts ∫( in Calc89, and the AI tutor shows it step by step on the on-screen keypad.
Related commands
- arcLen(Returns the arc length of the graph of an expression between two values of the variable.
- d(Differentiates an expression symbolically with respect to a variable.
- deSolve(Solves first and second order ordinary differential equations symbolically.
- dominantTerm(Returns the term of an expression that dominates near a point, for example as the variable tends to infinity.
- euler(Solves a differential equation numerically with Euler's method and returns a matrix with the variable values in the first row and the solution values in the second.
- fMax(Returns the value of the variable at which an expression reaches its maximum, as a condition such as x=1.
- fMin(Returns the value of the variable at which an expression reaches its minimum, as a condition such as x=2.
- impDif(Computes the derivative dy/dx of an equation that defines y implicitly in terms of x.