Calculus by Newton-Leibniz, notably derivation. The Newton notation (use quote ‘) is neat and fast but harder to imagine, this book uses Leibniz notation (use d/dx) for solving the dynamic programming formula of backpropagation as the chain rule can be seen more clearly.
The
is read as derivative of f, the process of finding the derivative of a function is call derivation.
Derivative of a Function
Derivative of a function f is a function t which has results as the rates of change at all points of function f. Each result of t at x can be used as coefficient to draw a tangent line to the function f at x.