Casio fx-9860G SD User Manual
Page 107
20050401
2-5-13
Numerical Calculations
# In the function
f(
x
)
, only X can be used as a
variable in expressions. Other variables (A
through Z excluding X,
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 can be
omitted.
# Discontinuous points or sections with drastic
fluctuation can adversely affect precision or
even cause an error.
# You cannot use a differential, quadratic
differential, integration,
Σ, maximum/minimum
value, Solve, RndFix or log ab 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
occurs.
# 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.
○ ○ ○ ○ ○
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)
.
AK4(CALC)6(g)2(FMax) -vx+cv+c,
Input the interval
a =
0
, b =
3.
a,d,
Input the precision
n =
6
.
g)
w