Casio FX-9750G Handmatig - Pagina 6

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Casio FX-9750G Handmatig
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Differential Calculations
This average, which is called the central difference , is expressed as:
f '(a) = –– –––––––––– ––– + –––––––––– –––
u u u u u To perform a differential calculation
Example
Input the function
Input point
Input
• In the function
ables (A through Z,
signed to that variable is applied during the calculation.
• Input of
lator automatically uses a value for
you are trying to determine.
• Discontinuous points or sections with drastic fluctuation can adversely affect pre-
cision or even cause an error.
1
f (a + x) – f (a)
x
f (a + x) – f (a – x)
= –––––––––– –––––––
2
x
To determine the derivative at point
y
x
x
3
+ 4
2
=
x
= 1
– 5
E
f(x)
.
AK4(CALC)2(
vMd+evx
+v-g,
x
a
=
for which you want to determine the derivative.
d,
x
, which is the increase/decrease of
bE-f)
w
f(x)
, only X can be used as a variable in expressions. Other vari-
r
, ) are treated as constants, and the value currently as-
x
and the closing parenthesis can be omitted. If you omit
f (a) – f (a – x)
x
x
– 6, when the increase/decrease of
+
d/dx
)
x
x
that is appropriate for the derivative value
x
= 3 for the function
x
.
is defined as
x
, the calcu-
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