Example

Calculate 2+3 and 6C4, first in RPN mode and then in ALG mode.

Keys:

Display:

Description:

9()

 

Switch to RPN mode (if necessary)

 

Enter 2, then place 3 in the x-register.



 

Note the flashing cursor after the 3;

 

_

don’t press Enter!

 

 

Press the addition key to see the result.

 

Enter 6, then place 4 in the x-register.



x

_

Press the combinations key to see the

 



result.

9()

 

Switch to ALG mode



Expression and result are both shown.



 

 

x



Enter the combination function.

Õ



Enter the 6, then move the edit cursor

 

 

past the comma and enter the 4.



Press Enter to see the result.

 

 



In ALG mode, the infix operators are , ,, , and . The other two argument operations use function notation of the form f(x,y), where x and y are the first and second operands in order. In RPN mode, the operands for two argument operations are entered in the order Y, then X on the stack. That is, y is the value in the y-register and x is the value in the x-register.

The xth root of y (') is the exception to this rule. For example, to calculate 3 8 in RPN mode, press  '. In ALG mode, the equivalent operation is keyed in as 'Õ.

As with the single argument operations, some of the two argument operations display differently in RPN mode than in ALG mode. These differences are summarized in the table below.