Calculator User Manual

Quick Start
3
00QWIKST.DOC TI-86, Quick Start, US English Bob Fedorisko Revised: 02/13/01 1:51 PM Printed: 02/13/01 2:59 PM Page 3 of 1400QWIKST.DOC TI-86, Quick Start, US English Bob Fedorisko Revised: 02/13/01 1:51 PM Printed: 02/13/01 2:59 PM Page 3 of 14
Resetting All Memory and Defaults
To reset all memory and defaults, press
- ™ ( & )
. The messages
Mem cleared
and
Defaults set
are displayed on the home screen, confirming that all memory and defaults are
reset. You may need to adjust the contrast after memory and default reset.
Calculating on the Home Screen
To replicate the screens shown in the Quick Start activities, reset all memory and defaults
once before you begin. Before doing an activity, press
:
to clear the screen (except
before the entry retrieval and integer-part examples). Otherwise, the screens your TI
-
86
shows may differ from the screens pictured next to the activities.
Calculating the Sine of a Number

Enter the sine function. (
:
)
=

Enter a value. You can enter an expression,
which is evaluated when you press
b
.
D - ~ F
4
E

Evaluate the problem. The evaluation of the
expression sine(
pà
4) is displayed.
b
Storing the Last Answer to a Variable

Paste the store symbol (
¶
) to the screen.
Since a value must precede
¶
, but you did
not enter a value, the TI
-
86 automatically
pasted
Ans
before
¶
. (
continued
)
(
:
)
X
To express
-
and
1
keystroke combinations, this
guidebook places brackets
(
ã
and
ä
)
around the word
above the key to press.
The TI
-
86 on-screen division
symbol is a forward slash
(
à
)
, as in a fraction.
Following evaluation, the
entry cursor automatically
moves to the next line, ready
for a new entry.
When the TI
-
86 evaluates an
expression, it automatically
stores the answer to the built-
in variable
Ans
, replacing
any previous value.