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Mathematics: Post your doubts here!
okay i have question- maths i have been trying to get it but i get close n then get lost agn the question is as follows eqn of curve= y^2+2x=13 eqn of line= 2y+x=k find the value of k for which the line is a tangent to the curve now i knw that the discriminant has to be used so that the line...