Why is the magnitude of the gradient equal to the maximum rate of change at that point?
135643
Gradient and Swiftest Ascent
86623
Why is $B^TB+\lambda\Omega$ positive definite?
84385
Implicit differentiation
34114
What is $\max{(1/\alpha+1/\beta+|1/\gamma|+|1/\delta|)}$?
127114
Differentiability implying continuity
45167
Deriving the speed of the propagation of a change in the Electromagnetic Field from Maxwell's Equations
90325
Why use the derivative and not the symmetric derivative?
18201
Why isn't the derivative of $e^x$ equal to $xe^{(x-1)}$?
44724
Intuition Behind Maximum Principle (Complex Analysis)
105248
Why is the gradient of implicit surface the normal vector (i.e. parallel to the normal line)?
36336
Gradient borders
131444
Local maximum implies derivative is $0$
69987
What is the $L^2$ gradient flow?
157923
RMSProp Squared Gradients
9735
Why does a change of direction imply an acceleration?
23664
Finding the rate of change in direction
18670
What is the gradient of $x^T A\, x$ with respect to the matrix $A$?