now _yn and _jn return 'symmetric' expressions
now _yn and _jn return 'symmetric' expressions

jerli/sympy,drufat/sympy,Arafatk/sympy,yashsharan/sympy,drufat/sympy,postvakje/sympy,skidzo/sympy,jaimahajan1997/sympy,sampadsaha5/sympy,mafiya69/sympy,Curious72/sympy,aktech/sympy,mcdaniel67/sympy,ChristinaZografou/sympy,mcdaniel67/sympy,postvakje/sympy,chaffra/sympy,mafiya69/sympy,oliverlee/sympy,hargup/sympy,ahhda/sympy,madan96/sympy,jaimahajan1997/sympy,Shaswat27/sympy,Davidjohnwilson/sympy,Titan-C/sympy,lindsayad/sympy,oliverlee/sympy,hargup/sympy,Arafatk/sympy,kaushik94/sympy,sampadsaha5/sympy,ChristinaZografou/sympy,lindsayad/sympy,souravsingh/sympy,ga7g08/sympy,Curious72/sympy,chaffra/sympy,mcdaniel67/sympy,souravsingh/sympy,sampadsaha5/sympy,ahhda/sympy,postvakje/sympy,oliverlee/sympy,Shaswat27/sympy,Shaswat27/sympy,hargup/sympy,ahhda/sympy,kaushik94/sympy,madan96/sympy,drufat/sympy,jaimahajan1997/sympy,kaichogami/sympy,Arafatk/sympy,Curious72/sympy,skidzo/sympy,kaushik94/sympy,jerli/sympy,Davidjohnwilson/sympy,aktech/sympy,rahuldan/sympy,yashsharan/sympy,Titan-C/sympy,yashsharan/sympy,aktech/sympy,skidzo/sympy,mafiya69/sympy,kaichogami/sympy,rahuldan/sympy,lindsayad/sympy,souravsingh/sympy,ga7g08/sympy,kaichogami/sympy,Titan-C/sympy,ChristinaZografou/sympy,Davidjohnwilson/sympy,ga7g08/sympy,rahuldan/sympy,jerli/sympy,chaffra/sympy,madan96/sympy