F of x..................function of x...........commonly written as...........F (x)..........................the sign for Fiola de Mare............................looks like.....................F(i.......................it has the full name.............and then the symbol......................which looks to me like an F...........with half a parenthesis............a half moon....................................

The derivative - The Math Page

www.themathpage.com/acalc/derivative.htm

Calculus however is concerned with rates of change that are not constant. ... Let y =f(x) be a continuous function, and let the coördinates of a fixed point P on the  ...

The derivative of f(x) - Khan Academy

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https://www.khanacademy.org/...calcul...

Khan Academy

Calculus-Derivative: Finding the derivative of y=x^2.

The Fundamental Theorem of Calculus - SOS Math

www.sosmath.com/calculus/integ/integ03/integ03.html

The Fundamental Theorem of Calculus. This theorem bridges the antiderivative concept with the area problem. Indeed, let f (x) be a function defined and  ...

Derivative Rules - Math is Fun

https://www.mathsisfun.com/calculus/derivatives-rules.html

Maths Is Fun

Chain Rule (in a different form), f(g(x)), f'(g(x))g'(x). "The derivative of" is also written. Examples. Example: what is the derivative of sin(x) ? .... Calculus Index.

Introduction to Derivatives - Math is Fun

https://www.mathsisfun.com/calculus/derivatives-introductio...

Maths Is Fun

to find the derivative of a function y = f(x). x changes from x ... function f(x) = x². We know f(x) = x², and can calculate f(x+Δx) : .... Calculus Index · Search :: Index  ...