matlab中的绝对值函数

在Matlab中，绝对值函数使用abs关键字来实现。你可以使用abs函数来求取一个数字或向量的绝对值。当输入为复数时，该函数返回的是模值（即欧氏距离）。例如，若有一个矩阵a=[1.1 -2.3 -2.7 1.6; 2.1 2.3 -3.8 -3.1]，则使用abs(a)函数将返回矩阵a每个元素的绝对值。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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