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l5l
2002 Mar 27
2
Error with nls
...5)*b6 + d
db5, db6 are the first derivatives, b5, b6 are the functions to be
fitted. The remaining parameters are unknown and should follow from the
fit.
assuming that g(t) has the functional form: b4i + (b40-b4i)*exp(-k4*t)
(after calculations of 2 papers of A4) follows the solution:
L5L6 <- function(b40, b4i, k4, t, p50, p56, p60, p65, pc, ph, pd, pb50,
pb60) {
k50 <- exp(p50)
k56 <- exp(p56)
k60 <- exp(p60)
k65 <- exp(p65)
c <- exp(pc)
h <- exp(ph)
d <- exp(pd)
b50 <- exp(pb50)
b60 <- exp(pb60)
a <- (k50+k56)
b <-...