Hi friends - I hope this is not a misplaced question. From the
literature (Kushmerick AJP 1997;272:C1739-C1747) I have a series of
Mathematica equations which are solved together to yield over different
pH values the concentrations of metabolites in skeletal muscle using the
Mathematica function FindRoot((E1,E2...),(V2,V2..)] where E is a list of
equations and V list of variables.? Most of the equations are individual
binding reactions of the form 10^6.494*atp*h == hatp and next
10^9.944*hatp*h ==hhatp describing binding of singe protons or Mg or K
to ATP or creatin for example, but we also have constraints giving total
concentrations of say ATP i.e. ATP + ATPH, ATPH2..ATP.Mg
I have, without success, tried to find ways to do this in R - I have 36
equations on 36 variables and 8 equations on total concentrations. As
far as I can see from the definition of FindRoot in Wolfram, Newton
search or secant search is employed.
I'm on Windows R 4.2.2
Best wishes
Troels Ring, MD
Aalborg, Denmark