Questions tagged [complex]

Questions about using complex numbers in Mathematica. This includes basic arithmetic, functions of complex numbers, plotting complex functions, and dealing with branch cuts.

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Can you plot complex maps? [closed]

I want to plot $|z+1|=|z-2+i|$/ Is there any way to do this without converting it to Cartesian form and contour plotting?
82 views

How to Chop parts of an expression?

The following expression has four terms $T1$, $T2$, $T3$ and $T4$, such that the totalFunction = T1 - T2 - T3 + T4;. It turns out that the part T1-T2 gives a ...
231 views

Obtaining a matrix of complex values from associations giving the real and imaginary parts of each element?

I have a list of associations keyed by real and imaginary numbers, like so: ...
722 views

How to use Mathematica to do a complex integrate with poles in real axis?

I want to use Mathematica to compute the following complex integral: Integrate[Exp[I z ] 1/z, {z, -Infinity, Infinity}] Mathematica reports that it does not ...
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Re and Im relationships without Abs among Fourier, FourierTransform, InverseFourier, and InverseFourierTransform

Is there a way to make Fourier's Re and Im components separately track the results of ...
54 views

Force a function to be real

I have a multivariable function in Mathematica that arises as an eigenvalue of a matrix. It involves square roots of the variables involved, but Mathematica automatically assumes such a function to be ...
Let my function be $f(x)=e^{|x|}$. I wish to find $f''(x)$, this can be done as- $f'(x)=$sgn$(x)e^{|x|}$ $f''(x)=$sgn$(x)^2e^{|x|} =e^{|x|}$ In Mathematica, I am trying to plot $f''(x)$, it ...