CASTI-89 TITANIUM · CALC89
left(
Returns the left side of an equation or inequality. Given a list, it returns the first n elements.
Syntax
left(equation or list[, n])
- Group
- Algebra
- Arguments
- Takes an equation or a list, and for a list an optional count n.
- Availability
- Included
- Menu path
- F2 Algebra ▸ Extract ▸ left(
Example
| Input | Result |
|---|---|
| left(x+1=5) | x+1 |
Typing left(x+1=5) on the home screen and pressing ENTER returns x+1.
Keystrokes on the TI-89 Titanium
F2▶×33
The same key sequence inserts left( in Calc89, and the AI tutor shows it step by step on the on-screen keypad.
Related commands
- 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.
- polyRemainder(Divides one polynomial by another and returns the remainder, as in polynomial long division.