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  1. C

    October,November,2012 Maths Examination.

    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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