![]() ![]() While it's still possible in more technically oriented programs (like MatLab and SciLab), it does require a bit of coding to get it to work. Programs for which this works include GeoGebra, Mathematica, Maple, and Math3D. Riemann surface for the real part: $\langle u^2-v^2,2uv,u\rangle$ You can setup some general settings like tick intervals, color scheme, origin offset, etc. At a time, it can plot 3D graph of 6 equations. You can enter an equation and range to plot respective 3D graph. In its 3D Graph tab, you can plot 3D graphs for mathematical equations. From there, there are tons of customization options. Start with a template and then edit the data in the spreadsheet (or copy it from your own spreadsheet). In GeoGebra, for example, you can plot the real part of complex function $f$ by using $g(x,y)=\text(u+iv)=(u+iv)^2=u^2+2uv\cdot i-v^2$ GraphCalc is another free 3D graphing software for Windows. LiveGap Charts is a free website where teachers can create and share all kinds of charts: line, bar, area, pie, radar, icon matrix, and more. While commands like plot(z,f(z)) may not work for complex $z$, it is usually possible to plot the real or imaginary parts of a complex-valued function by splitting the input into its real and imaginary components, and inputting (x,y,real(f(x+iy))) and (x,y,imag(f(x+iy))), respectively, or equivalent in place of $f(z)$. Most math software (free to use or proprietary) with 3D capabilities will have some form of built-in complex number arithmetic. ![]() For single-valued complex functions of a single complex variable
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