added some small methods
added some small methods

madan96/sympy,postvakje/sympy,jaimahajan1997/sympy,sampadsaha5/sympy,madan96/sympy,souravsingh/sympy,yashsharan/sympy,chaffra/sympy,jaimahajan1997/sympy,souravsingh/sympy,souravsingh/sympy,yashsharan/sympy,drufat/sympy,yashsharan/sympy,chaffra/sympy,aktech/sympy,skidzo/sympy,rahuldan/sympy,skidzo/sympy,skidzo/sympy,aktech/sympy,kaushik94/sympy,postvakje/sympy,kaushik94/sympy,jaimahajan1997/sympy,drufat/sympy,postvakje/sympy,drufat/sympy,sampadsaha5/sympy,kaushik94/sympy,chaffra/sympy,sampadsaha5/sympy,madan96/sympy,rahuldan/sympy,aktech/sympy,rahuldan/sympy