Number of solutions of the equation `sin^4x-cos^2xsinx+2sin^2x+sinx=0in0lt=xlt=3pi` is_____

Number of solutions of the equation sin^(4)x-cos^(2)x sin x+2sin^(2)x+sin x=0 in 0<=x<=3 pi

Number of solutions of the equation sin^(4) x-cos^(2)x sin x + 2 sin^(2) x+sin x=0 in 0 le x le 3pi is ________.

Number of solutions of the equation sin^(4) x-cos^(2)x sin x + 2 sin^(2) x+sin x=0 in 0 le x le 3pi is ________.

The number of solution of sin^4x-cos^2xsinx+2sin^2x+sinx=0in0lt=xlt=3pi is

The number of solutions of sin^(4)x-cos^(2)xsinx+2sin^(2)x+sinx=0 in 0lexle 3pi is

The number of solutions of the equation sinx-sin2x+sin3x=2cos^(2)x-cosx" in "(0,pi) is

The number of solutions of the equation sinx-sin2x+sin3x=2cos^(2)x-cosx" in "(0,pi) is

The number of solutions of the equation sinx. Sin2x. Sin3x = 1 in [0, 2pi]

The number of solutions of the equation sin2x-2cosx+4sinx=4 in the interval [0,5pi] is