The number of solutions of the equation `x^3 +2 x^2 +5 x + 2 cos x = 0` in `(0,2 pi]` is

The number of solutions of the equation x^(3)+2x^(2)+5x+2cos x=0 in (0,2 pi] is

The number of solutions of the equation x^(3)+2x^(2)+5x+2cos x=0 in [0,2 pi] is lambda then (lambda)/(4)=

Write the number of solutions of the equation tan x+sec x=2cos x in the interval [0,2 pi].

The number of solution of the equation x^(3)+x^(2)+3x+2sin x=0 in -2 pi<=x<=4 pi is

Number of solutions of the equation 2sin^(3)x+6sin^(2)x-sin x-3=0 in (0,2 pi) are

The number of solutions of the equation x^(3)+x^(2)+4x+2sinx=0 in 0 le x le 2pi is