- #1
magnifik
- 360
- 0
How do you plot (1+i)i, where i is the imaginary number. I decomposed it to eilog√2e-∏/4e2∏n (n = 0, +1, +2, ...) Should it be some kind of lattice? I would imagine it's discontinuous due to the n
Thanks
Thanks
jackmell said:No, it's not discontinuous. The n is only used to distinguish single-valued branching. It's still one single multi-function in the complex plane with an infinitely twisted sheet. Write it as:
[tex]f(z)=z^i[/tex]
Now, let z=1+i and draw a vertical line above that point in the complex plane. Where ever this line hits the sheets, that's the (infinite) values of (1+i)^i.
magnifik said:what do you mean by "the sheets"? how do i know where those are located
ParametricPlot3D[{Re[z], Im[z], t} /. z -> r Exp[I t], {r, 0,
2}, {t, -4 \[Pi], 4 \[Pi]}, BoxRatios -> {1, 1, 2},
PlotPoints -> {35, 35}]
myline = Graphics3D[{Thickness[0.008], Red,
Line[{{1, 1, -20}, {1, 1, 20}}]}];
mypoints =
Graphics3D[{PointSize[0.05], Blue,
Point @@ {{1, 1, #}} & /@ {\[Pi]/4, 9 \[Pi]/4,
17 \[Pi]/4, -7 \[Pi]/4}}];
Show[{ParametricPlot3D[{Re[z], Im[z], t} /. z -> r Exp[I t], {r, 0,
2}, {t, -4 \[Pi], 4 \[Pi]}, BoxRatios -> {1, 1, 2},
PlotPoints -> {35, 35}], myline, mypoints},
PlotRange -> {{-2, 2}, {-2, 2}, {-10, 10}}]
A complex function is a mathematical function that takes complex numbers as inputs and outputs complex numbers. It can be written in the form f(z) = u(x,y) + iv(x,y), where z is a complex number, u(x,y) and v(x,y) are real-valued functions of the variables x and y, and i is the imaginary unit.
A complex function takes complex numbers as inputs and outputs complex numbers, while a real function takes real numbers as inputs and outputs real numbers. Complex functions can have more complex and interesting behavior than real functions, as they involve both real and imaginary components.
A complex function can be thought of as a transformation of the complex plane. The real and imaginary parts of the function can be visualized as transformations of the x and y axes, respectively. The graph of a complex function can also be represented in three dimensions, with the real and imaginary components forming the x and y axes, and the output of the function forming the z axis.
Complex functions are used in a variety of applications in science and engineering, such as in electrical engineering, fluid dynamics, and quantum mechanics. They are also commonly used in signal processing and control systems. Complex functions allow for more accurate and efficient calculations in these fields.
There are several techniques for plotting complex functions, including using a computer program to graph the function, creating a contour plot by plotting the real and imaginary components separately, and using color to represent the magnitude and phase of the function. Another technique is to plot the function as a vector field, where the vectors represent the direction and magnitude of the function at each point in the complex plane.