直接拟合C;参数: >X=[0,0.2,0.40.7,0.9,0.92,0.99,1.2,1.4,1.48,1.5 >>y=[2.88;2.2576;1.9683;1.9258;2.0862;2.109; 2.1979;2.5409;2.9627;3.155;3.2052] >>A=ones(size(x)), exp (-3*x), cos(-2*x). *exp( 4*x),xA2 >>c=Aly: cI=c 1.22002.3397-0.67970.8700>> x=[0,0.2,0.4,0.7,0.9,0.92,0.99,1.2,1.4,1.48,1.5]'; >> y=[2.88;2.2576;1.9683;1.9258;2.0862;2.109; 2.1979;2.5409;2.9627;3.155;3.2052]; >> A=[ones(size(x))，exp(-3*x), cos(-2*x).*exp(- 4*x) ，x.^2]; >> c=A\y; c1=c' c1 = 1.2200 2.3397 -0.6797 0.8700