Casio fx-CG50 User Manual page 80

k Integration Calculations
To perform integration calculations, first display the function analysis menu and then input the
values using the syntax below.
<Math input/output mode>
K4(CALC)4(∫d
or
4(MATH)6(g)1(∫d
<Linear input/output mode>
K4(CALC)4(∫d
a
( : lower limit,
∫ ∫
( f(x), a, ( f(x), a,
As shown in the illustration above, integration calculations are performed by calculating
integral values from
effect calculates the surface area of the shaded area in the illustration.
Example 1
• Math input/output mode
• Linear input/output mode
Input the function
Input the lower limit, upper limit, and the tolerance value.
x f x a f b
) ( )e
x f x a f
) ( )e
x f x ) , a ,
) (
b tol
: upper limit,
∫ ∫
b b
tol) ⇒ tol) ⇒
b b , , f(x)dx f(x)dx
a a
a b
through for the function
To perform the integration calculation for the function shown below,
with a tolerance of "
∫ ∫
5 5
(2x (2x 2 2 + 3x + 4) dx + 3x + 4) dx
1 1
K4(CALC)4(∫d
dv+eebffw
f x
( ).
AK4(CALC)4(∫d
b,f,b5-e)w
b
b , tol )
: tolerance)
Area of
y f x
= ( ) where
tol
" = 1 × 10 –4
x
)cvx+
x
)cvx+dv+e,
2-31
[OPTN]-[CALC]-[
∫
b
f(x)dx
is calculated
a
a < x < b f x ) > 0. This in
, and (
∫
x
d ]