Calculator User Manual

8
Quick Start
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 8 of 14
Retrieving, Editing, and Re-evaluating the Previous Entry

Retrieve the last entry from the previous
example. (The last activity was not cleared.)
- ¢

Edit the retrieved entry. ! !
3

Evaluate. The first derivative of
x
2
with
respect to
x
at
3
is displayed.
b
Converting Degrees Fahrenheit to Degrees Celsius

Display the
CONV
menu. (:) - ’

Display the
CONV TEMP
menu. The
CONV
menu shifts up and
TEMP
is highlighted.
*

Enter the known measurement. If the
measurement is negative, use parentheses.
In this example, if you omit parentheses,
the TI
-
86 converts 4
¡
F to about
L
15.5
¡
C,
which it then negates (changes the sign
of), returning a positive 15.5
¡
C.
D a
4
E

Select
¡
F
to designate Fahrenheit as the
known measurement unit.
¡
F
and the
conversion symbol (
4
) are displayed after
the measurement. (
continued
)
'
When you press
b
, the
TI
-
86 stores the expression
or instruction you entered to
the built-in memory storage
area called
ENTRY
.
When expressing a
measurement for a
conversion, you do not enter
a unit symbol manually. For
example, you need not enter
¡
to designate degrees.