search for: mysol

...users, I have been using rsympy to solve a set of simultaneous equations from R. There are two solutions for the variable I'm interested in, xx[0] and xx[1], which are in terms of symbols called lam and conc. I'd like to pick out the one which is positive at (lam=0, conc=0) and call it mysol. In python I could write: if (xx[0].subs(lam,0)).subs(conc,0)>0: mysol=xx[0] else: mysol=xx[1] but I'm not sure how to do it from R via rsympy. The various combinations of \t and \n characters and spaces I've tried haven't worked, and I haven't been able to find any exam...