Here are some suggestions for improvements:
- Add more functions
- https://en.wikipedia.org/wiki/Elementary_function all the functions here like:
- Exponential functions
- Logarithms
- Trigonometric functions
- Inverse trigonometric functions
- Hyperbolic functions
- Inverse hyperbolic functions
- Subtraction/division
- https://en.wikipedia.org/wiki/Elementary_function all the functions here like:
- Simplify Expressions
- Handle parenthesis, both for input and output
Please make a pull request adding your code to a folder ./submitted_solutions/YOUR_GITHUB_NAME/
I'd love to see what you end up coming up with!