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Vector Algebra

Question
CBSEENMA12036064

The area (in square units) bounded by the curves y = straight y space equals space square root of straight x comma 2y-x+3 =0, X -axis and lying in the first quadrant is 

  • 9

  • 36

  • 18

  • 27/4

Solution

A.

9


2 space square root of straight x space equals space straight x minus 3
4 straight x space equals space straight x squared minus 6 straight x space plus space 9
straight x squared minus 10 straight x plus 9
straight x space equals 9 comma space straight x space equals 1
integral subscript 0 superscript 3 left parenthesis 2 straight y space plus 3 right parenthesis minus straight y squared right square bracket dy
open square brackets straight y squared plus 3 straight y minus straight y cubed over 3 close square brackets subscript 0 superscript 3 space equals space 9 plus 9 minus 9 space equals 9

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