Solve the equation: `2sin3ydx+3xcos3ydy=0`

Solve the equation: x^2+3=0

Solve the equation: sin2theta+cos3theta=0

Solve the equation sin^3x.cos3x+cos^3x.sin3x+3/8=0

Solve the equation sin^(2)x + cos^(2)3x=1

Solve the equation : x^2-2x+3/2=0

Solve the equation ydx+(x-y^2)dy=0

Solve the equation ydx+(x-y^2)dy=0

Solve the equation : 3x^2-4x+(20)/3=0

Solve the equation : 3x^2-4x+(20)/3=0

The number of solutions in the interval [0, pi] of the equation sin^(3)x cos 3x+sin 3xcos^(3)x=0 is equal to