Q. how to work a scientific calculator
Thanks for contacting the Online Library. I'm sorry you're running into issues using your scientific calculator! Can you clarify if you are using an app or a scientific calculator such as a TI-89? The instructions for how to use your scientific calculator will vary somewhat based on what scientific calculator you are using exactly.
If you are using an app, I would recommend googling the name of that app and help or support. You should be able to find specific instructions for that app.