Linked Questions

I have a question about Simplify: When I do a simplification the returned result is not as simple as I want. When I ask for the Norm of an complex expression, ...

I am trying to conjugate a symbolic expression, and I have explicitly stated the real terms. However, I simply can't get it to work: ...

How can I get a simplify expression of following when all a,b, .., f are real numbers? FullSimplify[Abs[(a+I b)+(c+I d)(e+I f)]^2]

How do I tell Mathematica that a variable is a real number. I searched for this question here and in Google and nothing that was suggested seems to work for me. I must be missing something. My code is ...

Say I enter the following code: FullSimplify[Im[r*Exp[I*theta]^2 + (s + I*t)*Exp[I*theta]], Element[theta | r | s | t, Reals]] I expect to get: ...

I have a complex expression with real positive variables only. Mathematica Input Style: ...

I'm trying to expedite some quantum mechanical calculations (expectation values etc.) by running them through Mathematica. When I say, for example, ...

Here is an expression ...

How do I complex conjugate a vector? ...

I won't have any occasion to have any imaginary number in my code. If there are any, that is an error. So allowing the imaginary case simply hinders the equation manipulation and simplification. I ...

Naïvely this is what happens and it obviously is not helpful! ...

the situation is as follows ...

When I try to evaluate Re[Sqrt[z]], for some values of Mathematica fails to evaluate it. For example, Re[Sqrt[2 + I*x]]` <...

Does the Im function work with symbolic arguments? ...

I have a function defined as follows: g[θ_] := 1/k (Exp[-I δ0] Sin[δ0] + 3 Exp[I δ1] Sin[δ1 Cos[θ] + 5/2 Exp[I δ2 (3 (Cos[θ])^2 - 1)) and I compute ...