matlab作球x^2+y^2+z^2=1的图像答:x=-1:0.001:1;y=-1:0.01:1;[X,Y]=meshgrid(x,y);Z=sqrt(1-(X.^2+Y.^2));Z(find(imag(Z)~=0))=nan;mesh(X,Y,Z)hold on mesh(X,Y,-Z)但是中心数据少不好看,建议用极坐标画 t=linspace(0,pi,100);p=linspace(0,2*pi,100);[theta,phi]=meshgrid(t,p);x=sin(...
怎么在MATLAB中画出x^2+y^2=1且y^2+z^2=1的图像答:不妨以x-y平面内的相角t为参变量,则满足第一个柱面方程的x和y分别为cos(t)和sin(t),而由第二个柱面方程不难解出z=sqrt(1-y^2)或z=-sqrt(1-y^2)。参考代码:[x,y,z]=cylinder(1,200);z=2.2*z-1.1;claa=0.3;mesh(x,y,z,'edgecolor','none','facecolor','r','...