MATLAB 向量相乘的问题已知 t=0:1:20;A=[1,0,0;0,1,0;0,0,1];B=[-sin(t),cos(t)_数学解答

MATLAB 向量相乘的问题
已知 t=0:1:20;
A=[1,0,0;0,1,0;0,0,1];
B=[-sin(t),cos(t),sin(t);-t,t,tan(t);sin(t),cos(t),cos(t)];
C=[1,0,1;0,1,0;0,0,1];
如何求A*B*C

人气：382 ℃　时间：2020-01-25 05:40:07

解答

t为向量的话,B的维数为3*63不满足矩阵的乘法故t为标量直接计算可得A 是单位矩阵,A*B=BA*B*C = B*C = [-sin(t),cos(t),0;-t+tan(t),t,tan(t);sin(t)+cos(t),cos(t),cos(t)]; 用Matlab的话就直接相乘就好for t = 0:1:2...