This calculus video tutorial provides a basic introduction into the definition of the derivative formula in the form of a difference quotient with limits. It explains how to find the derivative of a function using the limit process. This video contains plenty of examples and practice problems.
Derivatives - Free Formula Sheet:
https://www.video-tutor.net/calculus-formula-sheets.html
Derivatives - Video Lessons:
https://www.video-tutor.net/derivatives.html
Final Exam and Test Prep Videos:
https://bit.ly/41WNmI9