CASTI-89 TITANIUM · CALC89
cFactor(
Factors an expression over the complex numbers, so factors with non-real coefficients such as x+ⅈ are allowed. Use it when factor( leaves a quadratic that has no real roots.
Syntax
cFactor(expr[, var])
- Group
- Algebra
- Arguments
- Takes the expression and an optional variable to factor with respect to.
- Availability
- Pro feature in Calc89
- Menu path
- F2 Algebra ▸ Complex ▸ cFactor(
Example
| Input | Result |
|---|---|
| cFactor(x^2+1) | (x+ⅈ)·(x−ⅈ) |
Typing cFactor(x^2+1) on the home screen and pressing ENTER returns (x+ⅈ)·(x−ⅈ).
Keystrokes on the TI-89 Titanium
F2▶▶2
The same key sequence inserts cFactor( in Calc89, and the AI tutor shows it step by step on the on-screen keypad.
Related commands
- comDenom(Combines a sum of fractions into one reduced fraction over a common denominator.
- completeSquare(Rewrites a quadratic expression in completed square form.
- cPolyRoots(Returns all roots of a polynomial as a list, including non-real complex roots.
- cSolve(Solves an equation over the complex numbers and returns both real and non-real solutions.
- cZeros(Returns the real and non-real zeros of an expression as a list.
- domain(Returns the domain of an expression with respect to a variable as a condition, for example x≠0.
- exact(Converts a decimal or approximate value into an exact rational form where possible.
- expand(Multiplies out products and powers in an expression and returns a sum of terms.