Deep Learning - Deep Neural Network for Beginners Using Python - Use of Derivatives

The video tutorial introduces the concept of slope and its relation to derivatives, using a simple function example F(a) = 2A to explain how to calculate the slope. It discusses the significance of the positivity or negativity of derivatives in determining direction. The tutorial also touches on taking derivatives of complex functions and their applications, particularly in gradient descent methods.

What is the significance of the positivity or negativity of a derivative?

What types of functions can we take derivatives of, according to the text?