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a hasya kavi once said
<code>
Chaar laina sunaonga
Pasand aayi to theek hai
Nahi to chaar aur sunaounga
</code>
:-)
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Discriminant is different from determinant.

  ? Discriminant
  : The discriminant of the quadratic polynomial $a x^2 + b x + c$ is $b^2 - 4 a  c$
  : More info at https://en.wikipedia.org/wiki/Discriminant
  ? Determinant
  : The determinant of a 2 × 2 matrix is $ \begin{vmatrix} a & b\\c & d \end{vmatrix} = ad-bc$
  : More info at https://en.wikipedia.org/wiki/Determinant

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