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2-27
Example To perform the integration calculation for the function shown below,
with a tolerance of “
tol”=1E –4
Input the function f (x).
*(CALC)* (°
dx)ATVBTC
* fx-7400G
II: (CALC)
Input the start point and end point.
@D
Input the tolerance value.
@$CU
Note the following points to ensure correct integration values.
(1) When cyclical functions for integration values become positive or negative for different
divisions, perform the calculation for single cycles, or divide between negative and positive,
and then add the results together.
Positive
part (
S
)
Negative part (
S
)
Positive part (S) Negative part (S)
(2) When minute fluctuations in integration divisions produce large fluctuations in integration
values, calculate the integration divisions separately (divide the large fluctuation areas into
smaller divisions), and then add the results together.
• Pressing during calculation of an integral (while the cursor is not shown on the display)
interrupts the calculation.
• Always use radians (Rad mode) as the angle unit when performing trigonometric
integrations.
• An error (Time Out) occurs whenever no solution that satisfies the tolerance value can be
obtained.
1
5
(2x
2
+ 3x + 4) dx
1
5
(2x
2
+ 3x + 4) dx
a
b
f
(
x
)
dx =
a
c
f
(
x
)
dx
+ (–
c
b
f
(
x
)
dx
)
a
b
f
(
x
)
dx =
a
c
f
(
x
)
dx
+ (–
c
b
f
(
x
)
dx
)
a
b
f
(
x
)
dx =
a
x
1
f
(
x
)
dx
+
x
1
x
2
f
(
x
)
dx
+.....+
x
4
b
f
(
x
)
dx
a
b
f
(
x
)
dx =
a
x
1
f
(
x
)
dx
+
x
1
x
2
f
(
x
)
dx
+.....+
x
4
b
f
(
x
)
dx