
3 Reverse Polish Notation (RPN)
The HP Prime calculator provides you with three ways of entering objects in Home view, as follows:
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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:
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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:
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Reverse Polish Notation (RPN)
The arguments of the expression are entered rst 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:
38 Chapter 3 Reverse Polish Notation (RPN)
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