• 2022-07-24
    绘制Z=5*x.^2-y.^2+3的三维表面图(即马鞍面), clear all;clc; [x,y]= ______ (-3:0.5:3); %产生xy平面网格坐标矩阵 z=5*x.^2-y.^2+3; figure; ______ (x,y,z); %绘制三维表面图