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The mode settings control the
way the TI-86 interprets
expressions and displays
answers (page 34).
The TI-86 on-screen division
symbol is a forward slash
à
(
) , as in a fraction.
Always use parentheses to
clarify negation when you use
conversion instructions
(Chapter 4).
When an entry is executed on the home screen, the
answer is displayed on the right side of the next line.
When you execute an instruction,
displayed on the right side of the next line.
If an answer is too long to display on the screen, an
ellipsis (...) is displayed, initially to the right. To view
more of the answer, press ". When you do, an ellipsis
is displayed to the left. To scroll back, press !.
Entering Numbers
A symbol or abbreviation of each key's primary function is printed in white on the key. For
example, when you press \, a plus sign is pasted to the cursor location. This guidebook
describes number-entry keystrokes as
Entering Negative Numbers
To enter a negative number, press a (the negate key), and then press the appropriate
number keys. For example, to enter
number using T (the subtract key). a and T are two different keys with different uses.
The order in which the TI-86 evaluates negation and other functions within an expression is
governed by the Equation Operating Systemè (Appendix). For example, the result of
L16
, while the result of
(L4)
E to clarify the intended use of the negation symbol.
is typically
Done
, and so on, instead of Y Z [.
,
,
1
2
3
L5
, press a
. Do not attempt to express a negative
5
. If you are unsure about the order of evaluation, use D and
2
is
16
Chapter 1: Operating the TI-86
Entry
Answer
Entry
Answer
19
L4
2
is
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