Hello FriCAS group members,
I am looking for some FriCAS-code that decides whether a given integral is
elementary in the sense of wikipedia
(https://en.wikipedia.org/wiki/Elementary_function). For example, the error
function is NOT elementary in this sense.
I have tried the following Sage-code in the SageMathCell:
from sage.interfaces.fricas import fricas
print(fricas.eval("elem?(internalIntegrate(exp(-x^2), x))"))
This produces the output ``true''. From this I conclude that elem? tests
elementarity in a broader sense than that from wikipedia.
I would appreciate any help.
Fabian
PS: I am new to FriCAS.
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