Casio CFX-9850G PLUS, User'S Manual & Technical Reference

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64
Example 2 To determine the maximum value for the interval defined by start
point
a
=
0 and end point
b
=
3, with a precision of
n
=
6 for the
function
y = – x 2
+
2
x
+
2
Input
f ( x )
.
A K 4
(CALC)
6
(
g
)
2
(FMax)
-vx +c v +c,
Input the interval
a
=
0
,
b
=
3.
a,d,
Input the precision
n
=
6
.
g)
w
• In the function
f
(
x
)
, only X can be used as a variable in expressions. Other
variables (A through Z, r ,
θ
) are treated as constants, and the value currently
assigned to that variable is applied during the calculation.
• Input of
n
and the closing parenthesis following the precision value can be
omitted.
• Discontinuous points or sections with drastic fluctuation can adversely affect
precision or even cause an error.
• Note that you cannot use a Solve, differential, quadratic differential, integration,
maximum/minimum value or
Σ
calculation expression inside of a maximum/
minimum calculation term.
• Inputting a larger value for
n
increases the precision of the calculation, but it
also increases the amount of time required to perform the calculation.
• The value you input for the end point of the interval (
b
) must be greater than
the value you input for the start point (
a
). Otherwise an error is generated.
• You can interrupt an ongoing maximum/minimum calculation by pressing the
A
key.
• You can input an integer in the range of 1 to 9 for the value of
n
. Using any
value outside this range causes an error.
3 - 5
Maximum/Minimum Value Calculations