a + b + c

de ×f

Since a Solver equation appears all on one line, you must group the numerator and denominator separately by using parentheses, such as

L1)J)7TDLA/HBGT"

Order of Calculations. Operations occur from left to right but do:

!Exponentiation first. For example, 1BJ\%87 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 L1BJT\%87.

!Multiplication and division before addition and subtraction. For

example, 1)JD78#$ is interpreted as A + ( B/C ) = 12. To divide the sum of A + B by C, enter the equation as L1)JTD78#$.

Parentheses. Parentheses override the above rules of priority. When in doubt, use parentheses. It never hurts to use parentheseseven multiple parentheses. (Do not use brackets or braces.)

For example, earlier (page 154) we used the equation

(A% + B% + C %) × Old Forecast

,

Next ForecastOld Forecast + 

100

 

which was entered into the calculator as <HX:8E9A)L16)J6)76TD#((BE9A.

A

× would be entered as 1DLJB7T&

B C

A +

B × C

could be entered as

1)JB7DLABHT&"

D × E

 

 

 

 

12: The Equation Solver 165

File name : 17BII-Plus-Manual-E-PRINT-030709

Print data : 2003/7/11

Page 165
Image 165
HP 17bII manual 100, × C Could be entered as, × E