I need to solve a system of equations. It would be too long to solve it exactly, so I need to approximate by numbers the coefficients.
The problem is the following :
In:= N[1/3*gamma, 20] Out= 0.33333333333333333333 gamma[1.0000000000000000000]
As you can see, the indice 1 in gamma is also approximated. But I don't want the indices to be approximated. (In fact I'm solving a linear system of equations and this behavior can be a little problematic).
How to tell mathematica to only approximate coefficients of the equations but not indices inside brackets ?