Added necessary import of S from sympy.core
Added necessary import of S from sympy.core

Gadal/sympy,aktech/sympy,vipulroxx/sympy,shipci/sympy,Mitchkoens/sympy,sunny94/temp,sunny94/temp,Titan-C/sympy,jerli/sympy,MechCoder/sympy,chaffra/sympy,kmacinnis/sympy,saurabhjn76/sympy,ChristinaZografou/sympy,rahuldan/sympy,VaibhavAgarwalVA/sympy,wanglongqi/sympy,kaichogami/sympy,pbrady/sympy,atsao72/sympy,liangjiaxing/sympy,Arafatk/sympy,mafiya69/sympy,vipulroxx/sympy,jbbskinny/sympy,dqnykamp/sympy,Curious72/sympy,kaushik94/sympy,MridulS/sympy,garvitr/sympy,moble/sympy,kumarkrishna/sympy,lindsayad/sympy,VaibhavAgarwalVA/sympy,toolforger/sympy,jamesblunt/sympy,AunShiLord/sympy,sampadsaha5/sympy,grevutiu-gabriel/sympy,cswiercz/sympy,oliverlee/sympy,mafiya69/sympy,Designist/sympy,sahilshekhawat/sympy,yukoba/sympy,aktech/sympy,ahhda/sympy,wanglongqi/sympy,pandeyadarsh/sympy,wyom/sympy,jaimahajan1997/sympy,lindsayad/sympy,mcdaniel67/sympy,Curious72/sympy,ahhda/sympy,drufat/sympy,Vishluck/sympy,liangjiaxing/sympy,sahmed95/sympy,AunShiLord/sympy,kmacinnis/sympy,skidzo/sympy,abloomston/sympy,emon10005/sympy,kaushik94/sympy,hargup/sympy,shipci/sympy,ga7g08/sympy,vipulroxx/sympy,meghana1995/sympy,cccfran/sympy,maniteja123/sympy,garvitr/sympy,sampadsaha5/sympy,yukoba/sympy,beni55/sympy,Designist/sympy,abloomston/sympy,abhiii5459/sympy,souravsingh/sympy,MridulS/sympy,postvakje/sympy,drufat/sympy,Vishluck/sympy,saurabhjn76/sympy,souravsingh/sympy,kumarkrishna/sympy,saurabhjn76/sympy,yashsharan/sympy,shipci/sympy,jamesblunt/sympy,beni55/sympy,shikil/sympy,oliverlee/sympy,cswiercz/sympy,jerli/sympy,souravsingh/sympy,sahilshekhawat/sympy,pbrady/sympy,cswiercz/sympy,toolforger/sympy,abhiii5459/sympy,farhaanbukhsh/sympy,Davidjohnwilson/sympy,kevalds51/sympy,dqnykamp/sympy,moble/sympy,wyom/sympy,meghana1995/sympy,jamesblunt/sympy,iamutkarshtiwari/sympy,abloomston/sympy,Titan-C/sympy,mcdaniel67/sympy,chaffra/sympy,pandeyadarsh/sympy,mafiya69/sympy,diofant/diofant,atsao72/sympy,shikil/sympy,jerli/sympy,kaichogami/sympy,Gadal/sympy,pbrady/sympy,bukzor/sympy,aktech/sympy,cccfran/sympy,Sumith1896/sympy,lidavidm/sympy,postvakje/sympy,MridulS/sympy,madan96/sympy,lidavidm/sympy,toolforger/sympy,postvakje/sympy,Mitchkoens/sympy,atreyv/sympy,amitjamadagni/sympy,shikil/sympy,lindsayad/sympy,sahmed95/sympy,kmacinnis/sympy,Davidjohnwilson/sympy,asm666/sympy,Shaswat27/sympy,amitjamadagni/sympy,hrashk/sympy,kaushik94/sympy,jaimahajan1997/sympy,debugger22/sympy,cccfran/sympy,MechCoder/sympy,ChristinaZografou/sympy,hrashk/sympy,Shaswat27/sympy,wyom/sympy,iamutkarshtiwari/sympy,skidzo/sympy,sunny94/temp,jaimahajan1997/sympy,Titan-C/sympy,atreyv/sympy,sahilshekhawat/sympy,oliverlee/sympy,AkademieOlympia/sympy,VaibhavAgarwalVA/sympy,lidavidm/sympy,kevalds51/sympy,farhaanbukhsh/sympy,skirpichev/omg,farhaanbukhsh/sympy,Arafatk/sympy,yukoba/sympy,yashsharan/sympy,atsao72/sympy,Vishluck/sympy,kaichogami/sympy,liangjiaxing/sympy,dqnykamp/sympy,AunShiLord/sympy,moble/sympy,beni55/sympy,sahmed95/sympy,Sumith1896/sympy,ahhda/sympy,asm666/sympy,iamutkarshtiwari/sympy,sampadsaha5/sympy,Curious72/sympy,chaffra/sympy,kevalds51/sympy,grevutiu-gabriel/sympy,madan96/sympy,ChristinaZografou/sympy,debugger22/sympy,kumarkrishna/sympy,debugger22/sympy,Arafatk/sympy,maniteja123/sympy,abhiii5459/sympy,madan96/sympy,emon10005/sympy,AkademieOlympia/sympy,Designist/sympy,asm666/sympy,pandeyadarsh/sympy,MechCoder/sympy,Sumith1896/sympy,ga7g08/sympy,drufat/sympy,Mitchkoens/sympy,emon10005/sympy,Shaswat27/sympy,atreyv/sympy,maniteja123/sympy,rahuldan/sympy,grevutiu-gabriel/sympy,wanglongqi/sympy,ga7g08/sympy,hrashk/sympy,meghana1995/sympy,jbbskinny/sympy,Gadal/sympy,bukzor/sympy,bukzor/sympy,rahuldan/sympy,AkademieOlympia/sympy,garvitr/sympy,Davidjohnwilson/sympy,hargup/sympy,skidzo/sympy,hargup/sympy,yashsharan/sympy,mcdaniel67/sympy,jbbskinny/sympy