如何用matlab求解离散变量二阶导数?。
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敢问各位大侠,如何用matlab求解离散变量的二阶导数?
其实我想求光谱曲线的二阶导数,矩阵第一列数据是光谱波段(离散型),其余各列数据是光谱反射值,要求每一条光谱数据的二阶导数。
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