Differential Calculations - Casio fx-570ES User Manual

k Differential Calculations
Your calculator performs differential calculations by approximating
the derivative based on centered difference approximation.
d dx f x a tol
/ ( ( ), ,
f x
( ): Function of X (All non-X variables are treated as
constants.)
a
: Input a value to specify the point for which the derivative
should be obtained (differential point)
tol
: Tolerance range (input/output format: Linear)
• You can omit specification of the tolerance range. A default value
–10
of 1 × 10
∫
d dx
• (, / (, Pol(, Rec(, and
• Differential calculations can be performed in the COMP Mode only.
• When performing a differential calculation involving trigonometric
functions, specify Rad as the calculator's default angle unit.
• A "Time Out" error occurs when a differential calculation ends
without the ending condition being fulfilled.
tol
• A smaller
the calculation to take more time. Specify a
–14
10 or greater.
• You cannot input a
• Inaccurate results and errors can be caused by the following :
- discontinuous points in
- extreme changes in
- inclusion of the local maximum point and local minimum point in
x
values
- inclusion of the inflection point in
- inclusion of undifferentiable points in
- differential calculation results approaching zero
• Pressing A will interrupt an ongoing differential calculation.
Appendix
<#033> Determine
d
<#034> (3
dx
)
is used when you do.
Σ
value provides better precision, but it also causes
tol
value when using Math format.
x
x
values
π
f
'( ) when
2
2
x x
– 5 + 2, 2, 1×10
( cannot be used within
values
x
values
x
f x
( ) = sin(
tol
(
–12
) = 7
E-36
f x
( ),
value that is 1 ×
tol
values
x
)
specification omitted.)
a tol
, or .