II. Basic Calculations

A. Addition, Subtraction, Division, Multiplication

The order of operations of these four calculations is: (1) multiplication and division, in order from left to right, and (2) addition and subtraction, in order from left to right. To change this order of operations you must use parentheses.

The TI-89 does recognize implied multiplication under certain conditions.

Valid Entries
Calculator Interpretation
Invalid Entries
Calculator Interpretation
Single variable named xy
Function call evaluated at 3
Matrix index to element a[2,4]

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