do rewrite iff same function is present
do rewrite iff same function is present

jaimahajan1997/sympy,madan96/sympy,chaffra/sympy,yashsharan/sympy,jaimahajan1997/sympy,yashsharan/sympy,kaushik94/sympy,madan96/sympy,chaffra/sympy,skidzo/sympy,skidzo/sympy,madan96/sympy,kaushik94/sympy,yashsharan/sympy,jaimahajan1997/sympy,skidzo/sympy,kaushik94/sympy,chaffra/sympy