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