Question

Pl. describe the chain rule. When does one use it?

Answer 1

when you where taking derivative of this d/dx sin(2x)
answer would be 2cos(2x)
when you have a function inside another you use chain rule, In our example 2x was inside sin(). So we can derivative of whole function then inside function

Answer 2

if you were to take derivative of this d/dx sin(2x)
answer would be 2cos(2x)
when you have a function inside another you use chain rule, In our example 2x was inside sin(). So we can derivative of whole function then inside function