HP Prime Graphing NW280AAABA manual Entering expressions, Textbook

•RPN (Reverse Polish Notation). [Not available in CAS view.]

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– π is entered as a divisor and applied to the previous result.

More information about RPN mode can be found in chapter 2, “Reverse Polish Notation (RPN)”, starting on page 47.

Note that on page 2 of the Home Settings screen, you can specify whether you want to display your calculations in Textbook format or not. This refers to the appearance of your calculations in the history section of both Home view and CAS view. This is a different setting from the Entry setting discussed above.

Entering expressions

The examples that follow assume that the entry mode is

Textbook.

•An expression can contain numbers, functions, and variables.

•To enter a function, press the appropriate key, or open a Toolbox menu and select the function. You can also enter a function by using the alpha keys to spell out its name.

•When you have finished entering the expression, press Eto evaluate it.

Getting started 37