What does the second derivative actually do in math and physics?

Second derivatives | Advanced derivatives | AP Calculus AB | Khan Academy

Second Derivative Test

What the Second Derivative Tells Us

Implicit Differentiation - Find The First & Second Derivatives

Higher order derivatives | Chapter 10, Essence of calculus

Second Derivative using IMPLICIT DIFFERENTIATION (Worked Example)

Visual Derivative Definition!

Thomas calculus exercise 3.6 question 1 - 10 solution | Derivative of Rational Powers

Simple trick for doing implicit differentiation!

Visual derivative of x squared

Finding first and second derivative

2nd Derivative

The meaning behind the first and second derivative

Higher Order Derivatives

10.2.15 1st and 2nd derivative of a parametric equation

Second derivatives (parametric functions) | Advanced derivatives | AP Calculus BC | Khan Academy

2nd derivative test, a visual explanation

The Second Derivative Test to Find Maximums / Minimums, Quick Example 1

Given fx sketch the first and second derivative graph