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Let be the length of the common chord of the curves and, and be the length of the latus rectum of , then
detailed solution
Correct option is C
For the points of intersection of the curves x2+y2=9 and y2=8x, we have x2+8x−9=0⇒x=−9 or x=1 Since x>0 for y2 = 8x, the points of intersection are (1,22) and (1,−22) so that the length of the common chord L1 is 42.L2=length of the latus rectum of y2=8x is 8 . So L1Talk to our academic expert!
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