MATLAB仿真及电子信息应用答案(共7页).doc

.MATLAB仿真及电子信息应用第二单元1. a=zeros(2)a = 0 0 0 0 a(1,2)=2a = 0 2 0 02. a=1 0 -2 3;b=0 1 2 1; a+bans = 1 1 0 4 a.*bans = 0 0 -4 3 /-4+3 =-1 dot(a,b)ans =-13. a=randn(4)a = 0.8156 1.1908 -1.6041 -0.8051 0.7119 -1.2025 0.2573 0.5287 1.2902 -0.0198 -1.0565 0.21930.6686 -0.1567 1.4151 -0.9219 sum(