evaluation - How to tell Mathematica not to simplify an expression

While there is this question with a very similar title, it does not answer my question, which is:

I have part of an input, in my case

Re[Exp[I*x]]

which Mathematica "simplifies" to

Cos[Re[x]]/E^Im[x]

So I am wondering how to tell Mathematica to leave this expression, whether it's alone or part of a longer formula, in its previous form rather than to change it as shown here.

Update

I should probably add I am still running version 6, hoping this is not causing the issue.

Answer

In case you want Mathematica to suppress on the fly simplification and having slots (#) involved, you might consider using Defer:

Defer@Integrate[x^# Exp[-x], {x, 0, 1}]&/@Range[2]

Comments

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