to txuser: As far as I can tell, for Bahamas one neeeds a tourist visa. For Mexico - as long as the cruise is not more than 3 days, one does not need any visa (anyone in the world does not need a Mexico visa for a cruise upto 3 days). For entering back in US, either you can enter on a stamped visa or on AP. Pls check as well.
Discriminant of a Quadratic. The number D = b2 â 4ac determined from the coefficients of the equation ax2 + bx + c = 0. The discriminant reveals what type of roots the equation has. Note: b2 â 4ac comes from the quadratic formula.
Definition of Discriminant. The Discriminant of an equation gives an idea of the number of roots and the nature of roots of the equation.If ax 2 + bx + c = 0 is a quadratic equation, then the Discriminant of the equation, i.e. D = b 2 - 4ac.efinition of Discriminant. The Discriminant of an equation gives an idea of the number of roots and the nature of roots of the equation.