CASTI-89 TITANIUM · CALC89
getNum(
Returns the numerator of a fraction after the expression has been reduced to a common denominator.
Syntax
getNum(expr)
- Group
- Algebra
- Arguments
- Takes one expression.
- Availability
- Included
- Menu path
- F2 Algebra ▸ Extract ▸ getNum(
Example
| Input | Result |
|---|---|
| getNum(3/(x+2)) | 3 |
Typing getNum(3/(x+2)) on the home screen and pressing ENTER returns 3.
Keystrokes on the TI-89 Titanium
F2▶×31
The same key sequence inserts getNum( in Calc89, and the AI tutor shows it step by step on the on-screen keypad.
Related commands
- 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.
- polyGcd(Returns the greatest common divisor of two polynomials.
- polyQuotient(Divides one polynomial by another and returns the quotient, as in polynomial long division.