**Khurram Wadee ✅** @mkwadee · 2018-06-27T17:04:34Z

Khurram Wadee ✅ @mkwadee

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Khurram Wadee ✅ @mkwadee

#ContourPlot of equal values of #BipolarCoordinates with #foci at (0,-1) and (0,1). Plotted using #wxmaxima. These #coordinates are #orthogonal #curvilinear.
https://en.wikipedia.org/wiki/Bipolar_coordinates

#MyWork #Mathematics #Maths #CCBYSA

Jun 27, 2018, 17:04 · Web · 0 · 0

**Khurram Wadee ✅** @mkwadee · Jun 27, 2018, 17:05

**Khurram Wadee ✅** @mkwadee · Jun 27, 2018, 17:05

Oops, that’s foci at (-1,0) and (1,0).

**Khurram Wadee ✅** @mkwadee · Jun 28, 2018, 16:43

**Khurram Wadee ✅** @mkwadee · Jun 28, 2018, 16:43

I’ve put a tidied up version of the figure up on #Wikipedia.