Chapter 2: Math, Angle, and Test Operations
45
squares next to the previous solution and
left
N
rt=
diff
disappear. Move the cursor to the variable for
which you now want to solve and press
ƒ \
.
Controlling the Solution for Solver or solve(
The TI-84 Plus solves equations through an iterative process. To control that process, enter
bounds that are relatively close to the solution and enter an initial guess within those bounds. This
will help to find a solution more quickly. Also, it will define which solution you want for equations
with multiple solutions.
Using solve( on the Home Screen or from a Program
The function
solve(
is available only from
CATALOG
or from within a program. It returns a solution
(root) of
expression
for
variable
, given an initial
guess
, and
lower
and
upper
bounds within which the
solution is sought. The default for
lower
is
L
1
â
99. The default for
upper
is
L
1
â
99.
solve(
is valid only
for real numbers.
solve(
expression
,
variable
,
guess
[
,{
lower
,
upper
}
]
)
expression
is assumed equal to zero. The value of
variable
will not be updated in memory.
guess
may
be a value or a list of two values. Values must be stored for every variable in
expression
, except
variable
, before
expression
is evaluated.
lower
and
upper
must be entered in list format.
MATH NUM (Number) Operations
MATH NUM Menu
To display the
MATH NUM
menu, press
~
.
MathPrint™
Classic
MATH NUM CPX PRB
1:
abs(
Absolute value
2:
round(
Round
3:
iPart(
Integer part
