Let

f $($n$)=2n^2+3$n$,$

g $($n$)=n^3,$

h $($n$)=10n^2+100.$

Then

f $($n$)=$ O $($g $($n$)),$

g $($n$)=\backslash$Omega $($h $($n$)),$

f $($n$)=\backslash$Theta $($h $($n$)).$

What about $h($n$)=\backslash$Theta $(f($n$))?$