Texas Instruments TITANIUM TI-89 - Manual (Page 76)

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Expanding Expressions Expanding Expressions Expanding Expressions Expanding Expressions
Reducing Expressions Reducing Expressions Reducing Expressions Reducing Expressions
Steps and keystrokes Display
Expand the expression (xN5)
3
. You can enter
“expand” on the entry line by typing EXPAND
on the keyboard, or by pressing „ and
selecting 3:expand( .
Press „ 3 c X | 5 d Z 3 d ¸
(Optional) Enter other expressions on your
own.
Steps and keystrokes Display
Reduce the expression (x
2
N2xN5)/(xN1) to its
simplest form. You can enter “propFrac” on
the entry line by typing
PROPFRAC on the
keyboard, or by pressing „ and selecting
7:propFrac( .
Press „ 7 c X Z 2 | 2 X | 5 d e c X |
1 d d ¸