matlab 求绝对值

在Matlab中，求绝对值可以使用abs关键字来实现。具体语法格式为abs(x)，其中x可以是一个数值、向量或矩阵。当x是一个数值时，abs(x)返回其绝对值；当x是一个向量或矩阵时，abs(x)会对每个元素分别求绝对值，并返回一个相同大小的向量或矩阵；当x是其他数据类型时，abs(x)的行为取决于该数据类型的定义。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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