HP Prime Graphing NW280AAABA manual Example Parentheses, R23jw14S j8nQ3 h45E

Example

Parentheses

If you make a mistake while entering an expression, you can:

•delete the character to the left of the cursor by pressing C

•delete the character to the right of the cursor by pressing SC

•clear the entire entry line by pressing Oor J.

Calculate	232	– 14	8	ln (45)
	---------------------------	–3

R23jw14S j8>>nQ3 >h45E

This example illustrates a number of important points to be aware of:

•the importance of

delimiters (such as parentheses)

•how to enter negative numbers

•the use of implied versus explicit multiplication.

As the example above shows, parentheses are automatically added to enclose the arguments of functions, as in LN(). However, you will need to manually add parentheses—by pressing R—to enclose a group of objects you want operated on as a single unit. Parentheses provide a way of avoiding arithmetic ambiguity. In the example above we wanted the entire numerator divided by –3, thus the entire numerator was enclosed in parentheses. Without the parentheses, only 14√8 would have been divided by –3.

38 Getting started