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I tried to work with Conjugates in Mathematica and it did not produce my desired result. I learned about assumptions and figured they're my way to go. This is the code:

Assuming[Element[a, Reals] && Element[e, Reals] && Element[m, Reals] && 
Element[r, Reals] && e > 0 && r > 0 && m > 0, Conjugate[(a E^(-I Sqrt[2] Sqrt[e m] r))/r]]

However, this is the output:

(E^(I Sqrt[2] Conjugate[Sqrt[e m] r]) Conjugate[a])/Conjugate[r]

Since all variables are real and positive, I'd expect only the sign in the exponent to flip. Why does it still want to conjugate real positive variables?


marked as duplicate by Jens, Bob Hanlon, MarcoB, happy fish, Szabolcs Nov 9 '16 at 9:53

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