Sharp EL-W531X Operation Manual page 55

Integration calculation
(Function for EL-W506X/EL-W516X/EL-W506)
<Example 2>
O
1
1
The fan shaped curve at left is given by the equation
y =
1 - x 2
Find the area of the fan shape with radius 1 and central
dx
1
Operation
0
dx
dx
y = 1 - x
2
angle 90 .
1
- x
1 dx
2
0
Display
x
54
x