a + b + c
d− e ⋅f
Since a Solver equation appears all on one line, you must group the numerator and denominator separately by using parentheses, such as
Order of Calculations. Operations occur from left to right but do:
Exponentiation first. For example, is interpreted as A ⋅ B3 = C. B is raised to the 3rd power and then multiplied by A. To raise A ⋅ B to the 3rd power, write the equation as .
Multiplication and division before addition and subtraction. For
example, is interpreted as A + ( B/C ) = 12. To divide the sum of A + B by C, enter the equation as .
Parentheses. Parentheses override the above rules of priority. When in doubt, use parentheses. It never hurts to use parentheses─even multiple parentheses. (Do not use brackets or braces.)
For example, earlier (page 154) we used the equation
| (A% + B% + C %) ⋅ Old Forecast | , | |
Next Forecast＝Old Forecast + | 100 | | |
| |
| |
which was entered into the calculator as .
A
⋅ would be entered as
B C
A + | B ⋅ C | could be entered as | |
D ⋅ E | |||
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12: The Equation Solver 165
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