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k Integration Calculations [OPTN]-[CALC]-[∫ dx]
To perform integration calculations, first display the function analysis menu and then input the
values using the syntax below.
K4(CALC)4(∫
dx) f(x) , a , b , tol !/( ) )
(
a
: start point,
b
: end point,
tol
: tolerance)
Area of
∫
a
b
f
(
x
)
dx
is calculated
As shown in the illustration above, integration calculations are performed by calculating
integral values from
a through b for the function y = f ( x) where a < x < b, and f ( x) > 0. This in
effect calculates the surface area of the shaded area in the illustration.
Example 1 To perform the integration calculation for the function shown below,
with a tolerance of “
tol” = 1 E – 4
Input the function
f (x).
AK4(CALC)4(∫
dx)ca5(U-Z)4(X)x+d4(X)+e,
Input the start point and end point.
b,f,
Input the tolerance value.
b!a(CATALOG)a1(A-E)5(E)
c~c(EXP)w-e
!/( ) ) w
Example 2 When the angle unit setting is degrees, trigonometric function
integration calculation is performed using radians (Angle unit = Deg)
Examples Calculation Result Display
Note the following points to ensure correct integration values.
∫
(
f
(
x
),
a
,
b
,
tol
)
⇒
∫
a
b
f
(
x
)
d
x
∫
(
f
(
x
),
a
,
b
,
tol
)
⇒
∫
a
b
f
(
x
)
d
x
∫
1
5
(2x
2
+ 3x + 4) dx
∫
1
5
(2x
2
+ 3x + 4) dx