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hey bro how many marks will i get if have done
(x^2)/4= x/k + k
k(x^2)= 4x + 4k^2
k(x^2) - 4x - 4k^2=0
the discriminant of his should equal zero cus a tangent intersects the curve at one spot therefore
(-4)^2 - 4(k)(-4k^2) = 0
correct and den did some mistake and my value of k is wrong
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