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Press
(
F1
TABLE
the function is to be evaluated, and press
You can scroll through the table with
, and/or
cleared with
DEL
1.2.2 SOLVING FOR INPUT VALUES
equation that you enter in the SOLVER. You can use any letter you wish for the input
variable when using the SOLVER. (Of course, if you are using a function that is entered in
the graphing list, the input variable is x.) You can even enter an equation consisting of
several variables! You should find your calculatorÕs solver a very valuable tool.
Press
2nd
GRAPH
If there is already an equation in the solver, clear it with
. You may need to press
CLEAR
shown on the right before you can clear the old expression.
You can access a function stored in another location,
such as our current y1 = 3.622(1 .093)^X, by pressing
the F-key corresponding to the equation or you can
type in a new equation.
Suppose we want to solve v(t) = 3.622(1.093)
when v = $15,000.
Press
and you will see the last values the
ENTER
calculator used for y1 and x. Enter 15,000 for y1.
Use
and/or
the SOLVER.) The displayed bound gives the values
between which your calculator will look for a solution
to the equation -- just leave the bound
Position the blinking cursor on the row corresponding
to the variable for which you want to solve and press
(
) .
F5
SOLVE
The left side of the equation, y1, evaluated at x » 93.66
and the right side of the equation, 15,000, are subtracted
and displayed in the left–rt row. When this value is 0,
an exact solution (rather than a rounded one) was found.
1
It is possible to change the bound and/or the tolerance if the calculator has trouble finding a solution to a
particular equation. This, however, should not usually happen. Refer to your OwnerÕs Manual for details.
Copyright © Houghton Mifflin Company. All rights reserved.
) , type in the x-value(s) at which
. Unwanted input entries can be
.
(SOLVER) to access the SOLVER.
to get to the screen
to move between locations in
1
as it is.
.
ENTER
,
,
Your calculator will solve for input values of an
t
for t
B-13
Chapter 1
v(85) » $6945
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