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Concatenation 连接
Concatenating arrays next to one another using commas is called horizontal concatenation. Each array must have the same number of rows. Similarly, when the arrays have the same number of columns, you can concatenate vertically using semicolons.
将两个数组左右连接，我们可以通过用[ , ]的方式，这种连接叫做水平的连接。每一个数组必须行数都相同才行。
Complex numbers have both real and imaginary parts, where the imaginary unit is the square root of –1.
复数每个都有实部与虚部，虚部单位使-1的平方根。
sqrt(-1)
ans =
To represent the imaginary part of complex numbers, use either i or j.
我们用i与j中的一个，来表示复数的虚部。
c = [3+4i, 4+3j; -i, 10j]
c =MATLAB2014a中help与参考页中文翻译(用于学习) Tutorials-matrices and arrays- Concatenation and Complex Numbers
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原文地址：http://blog.csdn.net/yushaopu/article/details/51340500
