Cubic Equation with Three Real Roots (JEE Mains) | ExamDuo
Local and global maxima and minima of functions of one variableMedium
Cubic Equation with Three Real Roots
If the set of all values of a, for which the equation 5x3 – 15x – a = 0 has three distinct real roots, is the interval (α, β), then β –2α is equal to ________