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To find the area bounded by the curves x=1, y=x−2, and y2=x:
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Points of Intersection:
- Intersection of y=x−2 (or x=y+2) and y2=x:
y2=y+2⟹y2−y−2=0⟹(y−2)(y+1)=0
So, y=−1 and y=2.
For y=−1, x=1, which gives the point (1,−1).
For y=2, x=4, which gives the point (4,2).
- Intersection of x=1 and y2=x:
y2=1⟹y=±1, giving points (1,1) and (1,−1).
- Intersection of x=1 and y=x−2:
y=1−2=−1, giving the point (1,−1).
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Setting up the Area Integral:
The bounded region lies between y=−1 and y=2:
- From y=−1 to y=1, the region is bounded on the right by x=y+2 and on the left by x=1.
- From y=1 to y=2, the region is bounded on the right by x=y+2 and on the left by the parabola x=y2.
Area A=∫−11((y+2)−1)dy+∫12((y+2)−y2)dy
A=∫−11(y+1)dy+∫12(y+2−y2)dy
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Evaluating the Integrals:
A1=[2y2+y]−11=(21+1)−(21−1)=2
A2=[2y2+2y−3y3]12=(24+4−38)−(21+2−31)=(6−38)−(613)=310−613=67
Total Area A=2+67=619 square units