### How to keep 1/sqrt(2) as 1/sqrt(2) ? [the canonical form is not canonical]

Hi all
Using sagetex to make computaion, I would like it to keep radical in the denominator (though I remember my 8 th grade course viewing the canonical form today in a pdf file seems odd )
so something like
1/sqrt(2) would not be written as
sqrt(2)/2 as it is normally.
I saw this related link : https://ask.sagemath.org/question/35236/simplify-an-expression-of-square-roots/
but for me the command
1/sqrt(2).maxima_methods().rootscontract().simplify()
gives also a "canonical" result.
Cheers,