Derivative Rules - mathsisfun.com
https://www.mathsisfun.com/calculus/derivatives-rules.htmlThe Derivative tells us the slope of a function at any point.. There are rules we can follow to find many derivatives.. For example: The slope of a constant value (like 3) is always 0; The slope of a line like 2x is 2, or 3x is 3 etc; and so on. Here are useful rules to help you work out the derivatives of many functions (with examples below).Note: the little mark ’ means derivative of, and ...
Introduction to Derivatives
www.mathsisfun.com › calculus › derivativesPut in f (x+Δx) and f (x): x2 + 2x Δx + (Δx)2 − x2 Δx. Simplify (x 2 and −x 2 cancel): 2x Δx + (Δx)2 Δx. Simplify more (divide through by Δx): = 2x + Δx. Then, as Δx heads towards 0 we get: = 2x. Result: the derivative of x2 is 2x. In other words, the slope at x is 2x. We write dx instead of "Δx heads towards 0".