I want to compute something like :
Conjugate[ Sin[θ] (I (2 Sqrt f + h[x]) + Sin[θ] η[x]) Derivative[h][x] + ((1 + I) Sqrt f (1 + I Cos[2 θ]) + h[x] Sin[θ]^2 - (Cos[θ]^3 + I Sin[θ]^3) η[x]) Derivative[η][x]] // Refine
I have a list of assumptions requiring that all the quantities (also the derivatives) are
Reals so, in principle, Mathematica should be able to replace the
-I, problem is it does not...
Why is it so difficult for Mathematica to replace the
-I, I really don't understand because it seems so simple...
Does anyone have a clue why it doesn't work ?
(I also tried
FullSimplify instead of
Refine and it doesn't work as well)
Thank you in advance ;)