实验：

矩阵创建和运算符号运算 MATLAB 常用绘图命令 MATLAB程序设计 一． 创建矩阵 1，直接法：

a=[ 1 2 3; 4 5 6 ; 7 8 9] a =

1 2 3 4 5 6 7 8 9 2，冒号生成法 x=1:0.2:2 x =

1.0000 1.2000 1.4000 1.6000 1.8000 2.0000 y=2:-0.2:1

y =

2.0000 1.8000 1.6000 1.4000 1.2000 1.0000 3，定数线性采样法

k=linspace(0, 2*pi,50) k =

Columns 1 through 15

0 0.1282 0.2565 0.3847 0.5129 0.6411 0.7694 0.8976 1.0258 1.1541 1.2823 1.4105 1.5387 1.6670 1.7952

Columns 16 through 30

1.9234 2.0517 2.1799 2.3081 2.4363 2.5646 2.6928 2.8210 2.9493 3.0775 3.2057 3.3339 3.4622 3.5904 3.7186

Columns 31 through 45

3.8468 3.9751 4.1033 4.2315 4.3598 4.4880 4.6162 4.7444 4.8727 5.0009 5.1291 5.2574 5.3856 5.5138 5.6420

Columns 46 through 50

5.7703 5.8985 6.0267 6.1550 6.2832

k=0:2*pi/50:2*pi

k =

Columns 1 through 15

0 0.1257 0.2513 0.3770 0.5027 0.6283 0.7540

0.8796 1.0053 1.1310 1.2566 1.3823 1.5080 1.6336 1.7593 Columns 16 through 30

1.8850 2.0106 2.1363 2.2619 2.3876 2.5133 2.6389

2.7646 2.8903 3.0159 3.1416 3.2673 3.3929 3.5186 3.6442 Columns 31 through 45

3.7699 3.8956 4.0212 4.1469 4.2726 4.3982 4.5239

4.6496 4.7752 4.9009 5.0265 5.1522 5.2779 5.4035 5.5292 Columns 46 through 51

5.6549 5.7805 5.9062 6.0319 6.1575 6.2832

t=linspace(0,2*pi,10)

t =

0 0.6981 1.3963 2.0944 2.7925 3.4907 4.1888 4.8869 5.5851 6.2832 y=exp(-2*t).*sin(t)

y =