02-27.txt

《MATLAB R2007基础教程》 清华大学出版社,包含电子课件,实例原文件,习题答案,都是基于matlab实现

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

>> B = logical(eye(3))

>> A(B)

>> X = [1 0 4 -3 0 0 0 8 6];

>> indices = find(X)