King Mongkut (Rama IV), (October 18, 1804 - October 18, 1868) was a king of Thailand1851-1868. He died from malaria. Reportedly, he remarked to one of his Christian missionary friends 'What you teach us to do is admirable, but what you teach us to believe is foolish'.
... qualitatively different cases:
If the discriminant is zero, then there is a repeated solution x, and this solution is real. (Geometrically, this means that the ...