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Parameters kx[0,1],kp[0,1],s0,m;
Variables t,y;
Function y=s0-((1/kx+0.1839/kp)*((13.55492*exp(0.26739*t)/(31.14889+0.42925*exp(0.26739*t)))-0.42925))-(((m+0.00252/kp))*(118.09769*ln((31.14889+0.42925*exp(0.26739*t))/31.57814)));
Data;
t,y
0        63.63497
4        59.44704
8        53.82187
12        46.31953
16        34.01546
20        23.00973
24        13.40701
28        8.7705
32      7.1334
36        4.81704
40        4.79449
44        4.45433
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p1                 1
p2                 0.0285957945196896
s0                 55.0667798764375
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