In matlab, each of these (q1 and q2) are solutions to a series of matlab problems that must all be run together. They work correct by themselves, but when I try to have both of them they both fail. How do I fix this?[x,y] = meshgrid([-5:1:5,-5:1:5]); q1=quiver(x,y,0.2*((2*x)+y),0.2*(x-(2*y)),0); clear; [x,y,z] = meshgrid([-5:1:5,-5:1:5,-5:1:5]); q2=quiver3(x,y,z,-0.1.*x.*cos(y),0.1.*y.*sin(x),cos(z),0);