# Entering Text; Editing, Deleting, And Clearing; Last Answer; Using Variables - HP Prime Graphing Calculator Quick Start Manual

## Entering text

The common alphabetic characters (a–z and A–Z) can be entered from the keyboard. To enter an uppercase alphabetic
character, first press A and then the key that has that character printed on it in orange. Thus to print F, enter Af. To
enter a lowercase character, first press AS and then the key that has that character printed on it in orange. Thus to
print f, enter ASf. The keyboard can be locked so that all subsequent characters are uppercase without the use of
A. The keyboard can also be locked so that every subsequent alphabetic character is lowercase without the use of

### Editing, deleting, and clearing

With an expression highlighted in history, tap
entry line (as shown at the right). If you had meant to enter
current expression by moving the cursor to the right of the π, pressing \, and then
typing 3.
To clear the entire entry line, press &. To execute a new calculation, press E.
The history section of Home view keeps a record of all your work. You can delete an item from history by selecting it and
pressing \. You can delete the entire history by pressing S&, but be careful. There is no undo for this action.

Press S+ (Ans) to retrieve your last answer for use in another calculation. Ans
appears on the entry line. This is a shorthand for your last answer and it can be part of
a new expression. You could now enter other components of a calculation—such as
operators, numbers, variables, and so on—and create a new calculation.
TIP:
You don't always need to first select Ans before it can be part of a new
calculation. If you press any binary operator key to begin a new calculation, Ans is automatically added to the entry line
as the first component of the new calculation. For example, to multiply the last answer by 13, you could enter S+
x13E. But the first two keystrokes are unnecessary. All you need to enter is x13E.

### Using variables

You can store a value in a variable (that is, assign a value to a variable). Then when you want to use that value in a calculation,
you can refer to it by the variable's name. You can create your own variables in the Home or CAS views, or you can take
advantage of the built-in variables in the Home view (real variables A to Z and θ, complex variables Z0–Z9, and so on). CAS
variables can be used in calculations in Home view, and Home variables can be used in calculations in the CAS. There are also
built-in app variables and geometry variables. These can also be used in calculations. Consult the user guide for details.
AaE
Your stored value appears as shown to the right. If you then wanted to multiply your
stored value by 5, you could enter: Aax5E.
You can also create your own variables (both in Home view and in CAS view). For
example, entering 101
ME, and a subsequent calculation such as ME*3 will yield 303.
Variables can also be created by adopting the following syntax: [variable
name]:=[object] . For example, entering A1AoA4A:S.55Eassigns 55 to the
variable YOU. A subsequent calculation such as YOU+ME would yield 156.
14
. The expression is copied to the
AmAeEassigns 101 to the variable
, you can edit the
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Quick Start Guide