实验一 MATLAB 运算基础1. 先求下列表达式的值，然后显示 MATLAB 工作空间的使用情况并保存全部变量。(1) (2) ，其中(3) (4) ，其中 t=0:0.5:2.5解：M 文件:z1=2*sin(85*pi/180)/(1+exp(2))x=[2 1+2*i;-.45 5];z2=1/2*log(x+sqrt(1+x^2)) a=-3.0:0.1:3.0;z3=(exp(0.3.*a)-exp(-0.3.*a))./2.*sin(a+0.3)+log((0.3+a)./2)t=0:0.5:2.5;z4=(t>=0&t<1).*(t.^2)+(t>=1&t<2).*(t.^2-1)+(t>=2&t<3) .*(t.^2-2*t+1)运算结果：z1=2*sin(85*pi/180)/(1+exp(2))x=[2 1+2*i;-.45 5];z2=1/2*log(x+sqrt(1+x^2)) a=-3.0:0.1:3.0;z3=(exp(0.3.*a)-exp(-0.3.*a))./2.*sin(a+0.3)+log((0.3+a)./2)t=0:0.5:2.5;z4=(t>=0&t<1).*(t.^2)+(t>=1&t<2).*(t.^2-1)+(t>=2&t<3) .*(t.^2-2*t+1)z1 = 0.2375z2 = 0.7114 - 0.0253i 0.8968 + 0.3658i 0.2139 + 0.9343i 1.1541 - 0.0044iz3 = Columns 1 through 4 0.7388 + 3.1416i 0.7696 + 3.1416i 0.7871 + 3.1416i 0.7913 + 3.1416i Columns 5 through 8 0.7822 + 3.1416i 0.7602 + 3.1416i 0.7254 + 3.1416i 0.6784 + 3.1416i Columns 9 through 12 0.6196 + 3.1416i 0.5496 + 3.1416i 0.4688 + 3.1416i 0.3780 + 3.1416i Columns 13 through 16 0.2775 + 3.1416i 0.1680 + 3.1416i 0.0497 + 3.1416i -0.0771 + 3.1416i Columns 17 through 20 -0.2124 + 3.1416i -0.3566 + 3.1416i -0.5104 + 3.1416i -0.6752 + 3.1416i Columns 21 through 24 -0.8536 + 3.1416i -1.0497 + 3.1416i -1.2701 + 3.1416i -1.5271 + 3.1416i Columns 25 through 28 -1.8436 + 3.1416i -2.2727 + 3.1416i -2.9837 + 3.1416i -37.0245 Columns 29 through 32 -3.0017 -2.3085 -1.8971 -1.5978 Columns 33 through 36 -1.3575 -1.1531 -0.9723 -0.8083 Columns 37 through 40 -0.6567 -0.5151 -0.3819 -0.2561 Columns 41 through 44 -0.1374 -0.0255 0.0792 0.1766 Columns 45 through 48 0.2663 0.3478 0.4206 0.4841 Columns 49 through 52 0.5379 0.5815 0.6145 0.6366 Columns 53 through 56 0.6474 0.6470 0.6351 0.6119 Columns 57 through 60 0.5777 0.5327 0.4774 0.4126 Column 61 0.3388 z4 = 0 0.2500 0...
