Gehirn von Stahl

Input an algebraic expression that you believe the Brunsviga may be able to evaluate. Click the button. Then find below the "code" required to do that or an error telling you why you are wrong. You can also select any of the examples/test-cases. Or run them all in a batch.

You can find details at https://marian-aldenhoevel.de/gehirn-von-stahl/.

Examples/Tests: