Manual

Reverse Polish Notation (RPN) 47

Reverse Polish Notation (RPN)

The HP Prime provides you with three ways of entering objects in

Home view:

• Textbook

An expression is entered in much the same way was if you

were writing it on paper (with some arguments above or

below others). In other words, your entry could be two-

dimensional, as in the following example:

• Algebraic

An expression is entered on a single line. Your entry is always

one-dimensional. The same calculation as above would

appear like this is algebraic entry mode:

• RPN (Reverse Polish Notation).

The arguments of the expression are entered first followed by

the operator. The entry of an operator automatically

evaluates what has already been entered. Thus you will need

to enter a two-operator expression (as in the example above)

in two steps, one for each operator:

Step 1: 5

h – the natural logarithm of 5 is calculated and

displayed in history.

Step 2: Szn –  is entered as a divisor and

applied to the previous result.

You choose your preferred entry method from page 1 of the

Home Settings screen (SH). See “System-wide settings”,

starting on page 30 for instructions on how to choose settings.

RPN is available in Home view, but not in CAS view.