006349 0.011156 0.010386 0.011047 0,1)分别是两段3次函数.008063 0:0知道数据x=0:(0.004377 0.009208 0:1.25)(0.001043 0 ].010949 0,0.010661 0.004667 0.010035 0.003415 0;知道这是分段函数.002195 0.00822 0.007107 0.00591 0.00943 0.05.25.002232 0;y=[0 0