What's the gradient of $f(x)=\langle Ax, x\rangle$?
489
How to take the gradient of the quadratic form?
56275
Vector derivative w.r.t its transpose $\frac{d(Ax)}{d(x^T)}$
87186
Gradient descent of $f(w)=\frac12w^TAw-b^Tw$ viewed in the space of Eigenvectors of $A$
20503
Meaning of inner product $\langle \vec{r} | \psi(t)\rangle $
127390
Second derivative of a composite function
133749
Trouble with gradient intuition
125774
Derivative of $a^x$ from first principles
31919
What can we say about the inner product $\langle f(t),f'(t) \rangle$?
30936
Does the operator $(\hat{f}\cdot m )^\vee$ maps Schwartz in it self?
3387
Derivative of $f(x)=|x|$
14830
A transformation of F[x]
93436
What is the gradient of $f(x, y, z) = \sqrt{x^2+y^2+z^2}$?
117076
Gradient of a function as the direction of steepest ascent/descent
133609
orthonormal system in a Hilbert space
106284
Establishing a Basis for $F[x]/(f(x))$
141286
When is $\mathbf{X}^{T}\mathbf{X}+\lambda\mathbf{I}$ invertible?
14867
How to interpret $\langle x|\hat Q|x'\rangle$ for a quantum mechanical operator $\hat Q$?