CASTI-89 TITANIUM · CALC89
factor(
Factors an expression over the rational numbers, for example a polynomial into linear and irreducible quadratic factors. With an integer it returns the prime factorization.
Syntax
factor(expr[, var])
- Group
- Algebra
- Arguments
- Takes the expression and an optional variable to factor with respect to.
- Availability
- Included
- Menu path
- F2 Algebra ▸ factor(
Example
| Input | Result |
|---|---|
| factor(x^2-1) | (x−1)·(x+1) |
Typing factor(x^2-1) on the home screen and pressing ENTER returns (x−1)·(x+1).
Keystrokes on the TI-89 Titanium
F22
The same key sequence inserts factor( in Calc89, and the AI tutor shows it step by step on the on-screen keypad.
Related commands
- getDenom(Returns the denominator of a fraction after the expression has been reduced to a common denominator.
- getNum(Returns the numerator of a fraction after the expression has been reduced to a common denominator.
- left(Returns the left side of an equation or inequality.
- linSolve(Solves a system of linear equations and returns the values of the variables as a list.
- nSolve(Finds one real solution of an equation numerically.
- piecewise(Defines a piecewise function from pairs of values and conditions; each value applies where its condition is true.
- polyCoeffs(Returns the coefficients of a polynomial as a list, starting with the highest power.
- polyDegree(Returns the degree of a polynomial, the highest power of the variable that occurs.