Download Wolfram Language Free
Two ways get Mathematica/WolframLang for free.
Download Wolfram Engine
- https://www.wolfram.com/developer/
- [Launching Today: Free Wolfram Engine for Developers By Stephen Wolfram. At https://writings.stephenwolfram.com/2019/05/launching-today-free-wolfram-engine-for-developers/ ]
Difference Between WolframLang, Mathematica, WolframEngine, WolframScript
Mathematica is Bundled with Raspberry Pi
Buy Mathematica
Or, just buy it. Cheap for student or hobbist. I recommend it as life time investment. https://www.wolfram.com/mathematica/pricing/