[Mypy fix] fix secant method (#4501)

* case switch using python

* review comments

* added type hints

* general code format

* [mypy] Fix type annotations for secant_method.py

* remove bad push

Suyash Shrivastava committed 4y ago

407c97906393ddaea43e2c21174c6cdaeb57dcfa

Parent: 7342b33

Committed by GitHub <noreply@github.com> on 7/21/2021, 6:01:55 AM