

Given, the equation of curves are:
y = √(5 - x2 ) .................1
and y = |x - 1| .................2
Curve 1 is the part of circle x2 + y2 = 5 which is above the x-axis.
From equation 1 and 2, we get
√(5 - x2 ) = |x - 1|
=> 5 - x2 = (x - 1)2
=> 5 - x2 = x2 + 1 - 2x
=> x2 + 1 - 2x + x2 - 5 = 0
=> 2x2 - 2x - 4 = 0
=> x2 - x - 2 = 0
=> (x - 2)*(x + 1) = 0
=> x = 2, -1
Now, required area = 2∫-1 √(5 - x2 ) dx - f|x - 1| dx
Now 2∫-1 √(5 - x2 ) dx = [x√(5 - x2 )/2 + (5/2)*sin-1 (x/√5) -1]2
=> 2∫-1 √(5 - x2 ) dx = 1 + (5/2)*sin-1 (2/√5) - {-1 + (5/2)*sin-1 (-1/√5)}
=> 2∫-1 √(5 - x2 ) dx = 2 + (5/2)*[sin-1 (2/√5) + sin-1 (1/√5)}
=> 2∫-1 √(5 - x2 ) dx = 2 + (5/2)*[sin-1 {(2/√5)*{√(1 - 1/5)} + (1/√5)*{√(1 - 4/5)}}]
=> 2∫-1 √(5 - x2 ) dx = 2 + (5/2)*sin-1 {(2/√5)*(2/√5) + (1/√5)*(1/√5)}
=> 2∫-1 √(5 - x2 ) dx = 2 + (5/2)*sin-1 (1)
=> 2∫-1 √(5 - x2 ) dx = 2 + (5/2)*(π/2)
=> 2∫-1 √(5 - x2 ) dx = 2 + 5π/4
Again,
2∫-1 |x - 1| dx = 1∫-1 |x - 1| dx + 2∫1 |x - 1| dx
=> 2∫-1 |x - 1| dx = - 1∫-1 (x - 1) dx + 2∫1 (x - 1) dx
=> 2∫-1 |x - 1| dx = [x - x2 /2 -1]1 + [x2 /2 - x 1]2
=> 2∫-1 |x - 1| dx = {1 - (1/2) - (-1 - 1/2)} + {4/2 - 2 - (1/2 - 1) }
=> 2∫-1 |x - 1| dx = 1/2 + 3/2 + 1/2
=> 2∫-1 |x - 1| dx = 5/2
So, the required area = 2 + 5π/4 - 5/2 = 5π/4 - 1/2 square units
