Added dyadic case to express and dt methods
Added dyadic case to express and dt methods

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