I test Mathematica (from Wolfram) on Raspberry Pi. I also start some of the alternatives e.g. wxMaxima, QtOctave (similar to Matlab), and ROOT (from CERN). In the end I rotate the 3D-plot.
https://www.youtube.com/watch?v=7J3I2iHmC0c
(I had some problems closing QtOctave since I don't see that part of the screen on my monitor. This video uses composite PAL-video output and that is y-splitted to a monitor and to the recording computer because the recording computer shows the video delayed. The output is adjusted to fill the recording and not the monitor.)
Mentioned programs:
https://en.wikipedia.org/wiki/Mathematica
https://en.wikipedia.org/wiki/Maxima_(software)
https://en.wikipedia.org/wiki/GNU_Octave
https://en.wikipedia.org/wiki/ROOT
What I wrote
in Mathematica (end a line with Shift+Enter):
2+2
N[Log[4 Pi],40]
x^4/(x^2-1)
Integrate[%,x]
Plot3D[Sin[x y],{x,0,Pi},{y,0,Pi}]
Plot[Sin[x^3],{x,-2,2}]
Some of these examples come from the book "Mathematica -- A System for Doing Mathematics by Computer" (1988) by Stephen Wolfram.