Texas Instruments TI-30XIIB Owners Manual - Page 21

straightforward

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To illustrate. consider the interpretative order of the following example. Example: 4+ 52 x 7+ 3x .5""'' 3 2413203 Enter Press 5 F1.1 EXA 7 3 .5 Lz±.1 60 Display Comments 4. (4 ) is stored 25. (9)single-vanable function [ill] evaluated immediately 0.16 (4 + 5') evaluated because x is same prionty as +. 1.12 x higher priority than + so (4 + x 7) evaluated. + stored 3. (3x ) stored. 0.5 .5 y stored 0.5 Cos 60' evaluated immediately. 3 2413203 Completes all operations: .5"'"°. evaluated. then 3 x .5""O next. then this is added to 1.12. Thus, by entering the expression Just as it is written. the calculator correctly interprets it. The important thing to remember here is that operations are enacted strictly according to their relative priority as stated in the rules. The calculator remembers all stored operations and recalls oach and its associated number for execution at exactly the correct time and place. Once familiar with the order of these operations. you will find most problems are extremely easy to solve because of the straightforward manner in which they can be entered into the calculator. When parentheses are required to properly write an equation. parentheses are also available on the calculator. In the expressions at the top of page 18, the parentheses entered. as shown, will result in the answers shown. 19

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To
illustrate.
consider
the
interpretative
order
of
the
following
example.
Example:
4+
5
2
x
7+
3x .5""''
3
2413203
Enter
Press
Display
Comments
4.
(4
)
is
stored
5
F1.1
25.
(9)single-vanable
function
[ill]
evaluated
immediately
EXA
0.16
(4
+ 5')
evaluated
because
x
is
same
prionty
as
+.
7
1.12
x
higher
priority
than
+
so
(4
+
x
7)
evaluated.
+
stored
3
3.
(3x
)
stored.
.5
Lz±.1
0.5
.5
y
stored
60
0.5
Cos
60'
evaluated
immediately.
3
2413203
Completes
all
operations:
.5“'"
°.
evaluated.
then
3
x
.5""O
next.
then
this
is
added
to
1.12.
Thus,
by
entering
the
expression
Just
as
it
is
written.
the
calculator
correctly
interprets
it.
The
important
thing
to
remember
here
is
that
operations
are
enacted
strictly
according
to
their
relative
priority
as
stated
in
the
rules.
The
calculator
remembers
all
stored
operations
and
recalls
oach
and
its
associated
number
for
execution
at
exactly
the
correct
time
and
place.
Once
familiar
with
the
order
of
these
operations.
you
will
find
most
problems
are
extremely
easy
to
solve
because
of
the
straightforward
manner
in
which
they
can
be
entered
into
the
calculator.
When
parentheses
are
required
to
properly
write
an
equation.
parentheses
are
also
available
on
the
calculator.
In
the
expressions
at
the
top
of
page
18,
the
parentheses
entered.
as
shown,
will
result
in
the
answers
shown.
19