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Apr 4, 2013 at 19:33 comment added Leonid Shifrin @QuantumMathematica Yes indeed, on a fresh kernel it does work.
Apr 4, 2013 at 18:56 comment added Oleksandr R. It does work for me. But, invoking f twice for the same symbol will produce an error. You need to take Leonid's approach of using ToExpression rather than Symbol if you want to avoid that.
Apr 4, 2013 at 18:46 comment added MaTECmatica Really? Maybe if you do a ClearAll[f], or restart a new, fresh Mathematica session? or give the function another name? I am guessing your old definition for f is in conflict with the one I propose. Notice the idea is the same as the one by Leonid, give the name as a string "myvar" instead of myvar
Apr 4, 2013 at 18:36 history answered MaTECmatica CC BY-SA 3.0