Area of region enclosed by curve y=|x−3|. X-axis and lines x=0,x=2 is _________.
A
32
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B
4
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C
92
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D
2
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Solution
The correct option is A4 We take y=0 to get point at intersection of the curve y=|x−3| with X-axis. ∴x−3=0 ∴x=3 ∴ Curve intersects X-axis at (3,0) Required area =2∫0|x−3|dx =∣∣
∣∣2∫0(x−3)dx∣∣
∣∣ Here x∈|0,2| so we have x−3<0 =2∫0(3−x)dx =(3x−x22)20 =(6−42)−0 =12−42 =82 ∴ Required area =4.