应该是很简单的matlab题,只是本人是刚学不久,不太会,望大虾帮帮忙,帮过...答:ezplot3('2*cos(t)','2*sin(t)','0.5*t')第二题 [x,y]=meshgrid(-pi/2:pi/50:pi/2);z=sin(pi*sqrt(x.^2+y.^2));surf(x,y,z)第三题 u=[0:pi/20:2*pi];v=u;x=(1+cos(u)).*cos(v);y=(1+cos(u)).*sin(v);z=ones(41,1)*sin(u);surf(x,y,z)