Was this its raw response to the same query as in the OP? It seems odd it would provide a response using variables named with underscores, rather than using spaces, or more traditional algebraic notation (x/y/z).
Example (expand the program by clicking the little link at the end of the response): https://chat.openai.com/share/31e9a077-4c24-4c17-b30d-8d0c4d...