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Editing, Deleting, and Clearing
With an expression highlighted in history, tap
. The expression is copied to the entry line
(as shown at the right). If you had meant to enter
, you can edit the current expression by
moving the cursor to the right of the
, pressing
C
, and then typing 3.
To clear the entire entry line, press
J
. 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
C
. You can delete the entire history by pressing
SJ
, but be careful as there is no undo for this action.
Last Answer
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, number, variables, etc.—
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+
s
13
E
. But the first two
keystrokes are unnecessary. All you need to enter is
s
13
E
.
Storing Values in 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, or you can take advantage of the built-in variables
in Home view (named
A
to
Z
and
) and in the CAS (named
a
to
z,
and a few others). 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.
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