HP (Hewlett-Packard) 50g ユーザーズマニュアル

Page 21-67

While all the programs presented earlier are produced and run in RPN mode, 
you can always type a program in User RPL when in algebraic mode by using 
function RPL>.  This function is available through the command catalog.  As an 
example, try creating the following program in algebraic mode, and store it into 
variable P2:            

«

→ X ‘2.5-3*X^2’ »

First, activate the RPL> function from the command catalog (‚N).  All 
functions activated in ALG mode have a pair of parentheses attached to their 
name.  The RPL> function is not exception, except that the parentheses must be 
removed before we type a program in the screen.  Use the arrow keys (š™)
and the delete key (ƒ) to eliminate the parentheses from the RPL>() statement.  
At this point you will be ready to type the RPL program.  The following figures 
show the RPL> command with the program before and after pressing the `
key.   

     

To store the program use the STO command as follows: 

„îK~p2`

An evaluation of program P2 for the argument X = 5 is shown in the next 
screen:

While you can write programs in algebraic mode, without using the function 
RPL>, some of the RPL constructs will produce an error message when you press 
`

, for example: