Memory And Stored Variables; Basic Mathematical Functions; Fractions - Texas Instruments MathPrint TI-30X Plus Quick Manual

0.13 Memory and stored variables

The TI-30X Plus MathPrint™ has eight memory variables,
Press x to store a variable and press z to select the variable to store.
Press n to store the value in the selected variable.
z is a multi-tap key that cycles through the variables
Press  to recall and use the stored values for these variables. The variable, say
inserted into the current entry and the value assigned to
expression.
To recall values of variables, press q ≤ to display a menu of variables and their stored
values. Select the variable you wish to recall and press n. The value assigned to the
variable is inserted into the current entry and used to evaluate the expression.
Press q ≠ and select 1: Yes to clear all variable values.
Example
Given that and
Keystrokes and solution:
Press q ≠  to clear variables.
and press x  n.
Enter
and press x z z n.
Enter
Press q ≤ 1 l + q ≤ 2 l
n.
Note: This calculation can also be
performed directly.
1

Basic mathematical functions

1.1

Fractions

TM
mode, press k.
In MathPrint
Press ] or [ to move the cursor between the numerator and denominator.
Fraction results are automatically simplified and the output is in improper fraction form.
Use the ►n/d◄►Un/d conversion (press t 1) when a mixed number output is
required.
Press q ∂ to enter a mixed number. Use the arrow keys to cycle through the unit,
numerator and denominator.
y =
, use the TI-30X Plus MathPrint™ to find the value of
12
x y z t a b c and
, , , , , ,
x y z t a b c and
, , , , , ,
is used to evaluate the
8
.
.
y
, is
.