非线性拟合

[flying_23]

条件t=[0.0100 0.6800 1.1000 1.6300 2.0700 2.6700 3.0900 3.6400 4.6500

5.1000 5.5800 6.1100 6.6300 7.0600 7.6200 8.6600 9.0400 9.6300];
y=[2.3291 3.8513 4.5009 6.7492 9.1121 9.6917 11.1693 10.9145 16.4428
18.2962 21.6399 25.7861 26.3428 26.5058 27.6395 35.0276 35.5562 36.1039];
方程Dy=-k*y*z+0.095*b*z , Dz=-b*z-0.222*z, y(0)=0, z(0)=5300
z只知道初始值，过程值无法测定，要求通过方程拟合得出k和b的值