Partial derivative $\frac{\partial}{\partial x_i} ( {\bf x}-{\bf c})^T A ( {\bf x}-{\bf c})$
489
How to take the gradient of the quadratic form?
53640
Equality of mixed partial derivatives
34081
Prove that $|f''(\xi)|\geqslant\frac{4|f(a)-f(b)|}{(b-a)^2}$
96112
Differentiating $ \left( 1 - \frac {1}{x} \right)^x $
56032
How come $\frac{1}{1-x}$ and $\frac{x}{1-x}$ have the same derivative?
89185
The notation for partial derivatives
137550
Finding the derivatives of inverse functions at given point of c
65100
Derivative of the product of operators and Derivative of exponential
115635
Differentiability of antiderivative and continuity of derivative
153191
A function satisfy $x\frac{\partial f(x,y)}{\partial x}+y\frac{\partial f(x,y)}{\partial y}=0$ in a convex domain implies it is a constant
4735
Proof for alternative definition of the derivative
85085
Simplifying the derivative of $|x|$
135577
Prove the existence of $c$ such that $f'(c) = 2c(f(c) - f(0))$
127390
Second derivative of a composite function
75390
How does one prove that if function's partial derivative respect to every variable is zero, function is constant?
17475
Find the derivative of $y= \frac{(4x^3 +8)^{\frac{1}{3}}}{(x+2)^5}$
91059
Why is $\frac{d^n}{dx^n}(y(x))$ the notation for the $n$th derivative of $y(x)$, instead of $\frac{d^n}{d^nx}(y(x))$?