[R] nls problem with R

[sterlesser]

the dataset's form is changed after my post
so I repost it here

t
0
0.3403
0.4181
0.4986
0.7451
1.0069
1.5535
1.8049
2.4979
6.4903
13.5049
27.5049
41.5049


V(t)
6.053078443
5.56937391
5.45484486
5.193124598
4.31386722
3.645422269
3.587710965
3.740362689
3.699837726
2.908485019
1.888179494
1.176091259
1.176091259


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