Add  documentations for some predicates
Add  documentations for some predicates

grevutiu-gabriel/sympy,ChristinaZografou/sympy,Gadal/sympy,garvitr/sympy,saurabhjn76/sympy,abhiii5459/sympy,ga7g08/sympy,oliverlee/sympy,postvakje/sympy,atsao72/sympy,lindsayad/sympy,abhiii5459/sympy,kaushik94/sympy,hargup/sympy,Curious72/sympy,asm666/sympy,Gadal/sympy,kaushik94/sympy,sampadsaha5/sympy,Vishluck/sympy,drufat/sympy,chaffra/sympy,debugger22/sympy,Shaswat27/sympy,chaffra/sympy,maniteja123/sympy,moble/sympy,ga7g08/sympy,yukoba/sympy,atreyv/sympy,aktech/sympy,debugger22/sympy,MechCoder/sympy,wanglongqi/sympy,oliverlee/sympy,maniteja123/sympy,jaimahajan1997/sympy,skidzo/sympy,postvakje/sympy,Vishluck/sympy,atreyv/sympy,iamutkarshtiwari/sympy,pandeyadarsh/sympy,wyom/sympy,sahmed95/sympy,Davidjohnwilson/sympy,yukoba/sympy,saurabhjn76/sympy,emon10005/sympy,rahuldan/sympy,VaibhavAgarwalVA/sympy,Davidjohnwilson/sympy,kaushik94/sympy,atsao72/sympy,garvitr/sympy,Designist/sympy,shikil/sympy,mcdaniel67/sympy,souravsingh/sympy,AkademieOlympia/sympy,sahmed95/sympy,souravsingh/sympy,kumarkrishna/sympy,lindsayad/sympy,Curious72/sympy,moble/sympy,jaimahajan1997/sympy,kevalds51/sympy,saurabhjn76/sympy,Designist/sympy,Titan-C/sympy,Titan-C/sympy,asm666/sympy,shikil/sympy,Designist/sympy,Curious72/sympy,mafiya69/sympy,mcdaniel67/sympy,mafiya69/sympy,Arafatk/sympy,jerli/sympy,kevalds51/sympy,moble/sympy,kaichogami/sympy,aktech/sympy,emon10005/sympy,sampadsaha5/sympy,Titan-C/sympy,yukoba/sympy,pandeyadarsh/sympy,bukzor/sympy,Shaswat27/sympy,Arafatk/sympy,shikil/sympy,Shaswat27/sympy,iamutkarshtiwari/sympy,ChristinaZografou/sympy,jerli/sympy,bukzor/sympy,pandeyadarsh/sympy,souravsingh/sympy,Arafatk/sympy,lindsayad/sympy,VaibhavAgarwalVA/sympy,bukzor/sympy,Vishluck/sympy,drufat/sympy,asm666/sympy,ahhda/sympy,ChristinaZografou/sympy,jbbskinny/sympy,kumarkrishna/sympy,kaichogami/sympy,VaibhavAgarwalVA/sympy,kaichogami/sympy,MechCoder/sympy,AkademieOlympia/sympy,jbbskinny/sympy,Gadal/sympy,madan96/sympy,ahhda/sympy,cswiercz/sympy,Davidjohnwilson/sympy,farhaanbukhsh/sympy,mcdaniel67/sympy,skidzo/sympy,hargup/sympy,skidzo/sympy,garvitr/sympy,madan96/sympy,MechCoder/sympy,madan96/sympy,farhaanbukhsh/sympy,jbbskinny/sympy,mafiya69/sympy,cswiercz/sympy,ga7g08/sympy,wyom/sympy,kevalds51/sympy,rahuldan/sympy,wanglongqi/sympy,kumarkrishna/sympy,grevutiu-gabriel/sympy,sahmed95/sympy,farhaanbukhsh/sympy,AkademieOlympia/sympy,atreyv/sympy,hargup/sympy,iamutkarshtiwari/sympy,jerli/sympy,chaffra/sympy,grevutiu-gabriel/sympy,postvakje/sympy,wyom/sympy,aktech/sympy,cswiercz/sympy,jaimahajan1997/sympy,debugger22/sympy,yashsharan/sympy,abhiii5459/sympy,yashsharan/sympy,wanglongqi/sympy,maniteja123/sympy,ahhda/sympy,drufat/sympy,sampadsaha5/sympy,oliverlee/sympy,atsao72/sympy,emon10005/sympy,yashsharan/sympy,rahuldan/sympy