Finding the gradient of $r = \sqrt{x^2+y^2+z^2}$ .
93436
What is the gradient of $f(x, y, z) = \sqrt{x^2+y^2+z^2}$?
32443
Find the kernel of a ring homomorphism $f(x)\to f(\sqrt 2)$
131769
How to derive this second derivative using the quotient rule?
9223
Finding $\iiint_K (x^2 -z^2)\, dx\, dy \,dz$
16278
Quick Hessian matrix and gradient calculation?
157918
Finding the derivative of $x^x$
117076
Gradient of a function as the direction of steepest ascent/descent
44296
Solving a cubic polynomial equation.
36128
Using differentiation for computing $\int_{0}^{1}\frac{\arctan(ax)}{x\sqrt{1-x^2}}\,dx$
70692
Solve $x^2+2=y^3$ using infinite descent?
24852
Symbolic linear algebra gradients/matrix calculus
82462
Square Root Algorithm
133749
Trouble with gradient intuition
14278
Gradient steepest direction and normal to surface?
100900
Finding maxima and minima of $f(x,y)= x^4 + y^4 - 2x^2 - 2y^2 + 4xy$
62209
Finding multivariable limits for the function $\frac{3x^2y}{x^2+y^2}$
59165
Derivative of a linear transformation.