The answer is: sometimes yes, sometimes no. See https://en.wikipedia.org/wiki/Equation_solving for some of the issues.
If f can be expressed as a polynomial, you might want to consider using https://www.jsoftware.com/help/dictionary/dpdot.htm Thanks, -- Raul On Wed, Nov 4, 2020 at 7:27 PM Piet de Jong <[email protected]> wrote: > > Still trying to learn/improve my J after 25 years. > > Here is the issue. I’m probably having a pipe dream. > > Suppose you have an implicit function f(x,y)=0 which is relatively “clean” > (ie simple to specify) > > Is there a “clean/efficient” way in J to solve for y given x or vice versa. > > I know I can write a function g such that g x gives y and g^:_1 y gives x. > But is there a cleaner way? The g and its inverse may be complicated even > if f is relatively simple. > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
