For example,
f(x)=(x+2)/((x-1)*(x-2))
We know that f(x) is not analytic for x=1 and x=2 (from our eye) ,
but do there exist a general method to find out these points?
Thank you
How to detect redundant equation from a system of nonlinear equation?
It means how to find out a system of nonlinear equation is "linear independence"?
One equation from the system can not be represented by the others in the system of nonlinear equation.