matlab求二阶导数1.2000000000E+000 1.4497632190E+0001.2200000000E+000 1.4497199175E+0001.2400000000E+000 1.4496764225E+0001.2600000000E+000 1.4496327454E+0001.2800000000E+000 1.4495888976E+0001.3000000000E+000 1.4495448891E+000求右边数据对
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matlab求二阶导数1.2000000000E+000 1.4497632190E+0001.2200000000E+000 1.4497199175E+0001.2400000000E+000 1.4496764225E+0001.2600000000E+000 1.4496327454E+0001.2800000000E+000 1.4495888976E+0001.3000000000E+000 1.4495448891E+000求右边数据对
matlab求二阶导数
1.2000000000E+000 1.4497632190E+000
1.2200000000E+000 1.4497199175E+000
1.2400000000E+000 1.4496764225E+000
1.2600000000E+000 1.4496327454E+000
1.2800000000E+000 1.4495888976E+000
1.3000000000E+000 1.4495448891E+000
求右边数据对左边数据的二阶导数（不是作图,是求出每个点的对应的值）,用textread[c1 c2] =textread('sample.txt','%f%f');
matlab求二阶导数1.2000000000E+000 1.4497632190E+0001.2200000000E+000 1.4497199175E+0001.2400000000E+000 1.4496764225E+0001.2600000000E+000 1.4496327454E+0001.2800000000E+000 1.4495888976E+0001.3000000000E+000 1.4495448891E+000求右边数据对
假设对y=f(x)等间隔采样,采样间隔为h,得到一系列数据点（xi,yi）,则函数的n阶导数为
diff(y,n)/h^n.
所以就是diff(c2,2)/0.02^2
就是这样啊,你说哪里错了