Casio fx-9860G AU User Manual page 97

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Example To determine the derivative at point
y x
3
=
f(x)
Input the function
AK4(CALC)2(
x a
Input point = for which you want to determine the derivative.
d,
Input the tolerance value.
bE-f)
w
<Math>
A4(MATH)4(
+evx+v-ged
w
f(x)
# In the function , 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 the tolerance (tol) value and the
closing parenthesis can be omitted. If you omit
tolerance (tol) value, the calculator automati-
cally uses a value for tol as 1
# Specify a tolerance (tol) value of 1
greater. An error (Time Out) occurs whenever
no solution that satisfies the tolerance value
can be obtained.
2-5-3
Numerical Calculations
x x
2
+ 4 + – 6, with a tolerance of "tol" = 1
.
d/dx
)vMd+evx+v-g,
d/dx
)vMde
-10.
E
-14 or
E
20070101 20050401
x
= 3 for the function
– 5
E
# In the Math input mode, the tolerance value is
fixed at 1 -10 and cannot be changed.
E
# Inaccurate results and errors can be caused by
the following:
- discontinuous points in
x
- extreme changes in
- inclusion of the local maximum point and local
x
minimum point in values
- inclusion of the inflection point in
- inclusion of undifferentiable points in
- differential calculation results approaching zero
x
values
values
x
values
x
values