plotting a system of derivatives

I am wanting to visualise the following system of equations, dy/dt=cos(y)*sin(x) and dz/dt=3+(sin(y)*cos(z)) is matlab. Does anyone know what function i should use. Thanks

[ankit agrawal]

You can use rk method ode45 or ode23 to solve above equation. You can write equation like this Y=[y0 z0] Ydot=[cos(Y(1)*sin(x);3+sin(Y(1)*cos(Y(2))];