Casio fx-9860G SD User Manual page 97

Example To determine the derivative at point
y x
=
3
f
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,
as constants, and the value currently
assigned to that variable is applied during the
calculation.
tol
# Input of the tolerance (
closing parenthesis can be omitted. If you
tol
omit tolerance ( ) value, the calculator
automatically uses a value for
tol
# Specify a tolerance ( ) 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
+ 4 + – 6, with a tolerance of "tol" = 1
2
x
).
d dx
/ )vMd+evx+v-g,
d dx
/ )vMde
r θ
, ) are treated
) value and the
tol
as 1 -10.
E
-14 or
E
20070101 20061001
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