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GATE 2023 ST – Question 11

Calculus · Multiple Integrals · 1 mark · Multiple choice

Find the area bounded by x=−y² and y=x+2.

  1. 3/2
  2. 7/2
  3. 9/2
  4. 9

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Correct answer: (C) 9/2

Explanation

Rewrite the line as x=y−2. Intersections satisfy −y²=y−2, giving y=−2,1. The parabola is the right boundary. Area=∫ from −2 to 1 of (2−y−y²)dy=[2y−y²/2−y³/3] from −2 to 1=**9/2, C**.

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