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[" 1.If "(a(1)^(2)b)" is the mid-point o...

[" 1.If "(a_(1)^(2)b)" is the mid-point of chord passing through the vertex of the parabola "],[[" (a) "a=2b," (b) "2a=b],[" 2.Ine condition that the straight line "lx+my+n=0" touches the parabola ",x^(2)=4ay" is "]]

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