Originally Posted by
tedhill I started to learn calculus following a book but I don’t understand the explanation of a derivative example. Here is the excerpt of the book:
Then the Pythagorean theorem tells us that
h(t)^2 + b(t)^2 = 13^2
We may differentiate both sides of this equation with respect to the variable t
(which is time in minutes) to obtain
2 · h(t) · h’(t) + 2 · b(t) · b’(t) = 0
It seems that the author applied the Chain Rule but I am not sure about the intermediary steps of this differentiation. Could someone show me the intermediary steps and explain them if needed ?