Derivatives of Multivariable Functions
activecalculus.org › multi › C-10Chapter 10 Derivatives of Multivariable Functions. 10.1 Limits; 10.2 First-Order Partial Derivatives; 10.3 Second-Order Partial Derivatives; 10.4 Linearization: Tangent Planes and Differentials; 10.5 The Chain Rule; 10.6 Directional Derivatives and the Gradient; 10.7 Optimization; 10.8 Constrained Optimization: Lagrange Multipliers
18.02SC MattuckNotes: Second Derivative Test
ocw.mit.edu › courses › mathematicsSecond Derivative Test 1. The Second Derivative Test We begin by recalling the situation for twice differentiable functions f(x) of one variable. To find their local (or “relative”) maxima and minima, we 1. find the critical points, i.e., the solutions of f ′(x) = 0; 2. apply the second derivative test to each critical point x0: f ′′(x
3 - Second-order PDs
https://economics.uwo.ca/.../3-second-order-partial-derivatives/contentSection 3 Second-order Partial Derivatives. The partial derivative of a function of \(n\) variables, is itself a function of \(n\) variables. By taking the partial derivatives of the partial derivatives, we compute the higher-order derivatives.Higher-order derivatives are important to check the concavity of a function, to confirm whether an extreme point of a function is max or min, etc.