Partial Differentiation and Gradients

Partial Differentiation and Gradients

Partial Differentiation and Gradients (2)

Partial Differentiation and Gradients (3)

Computing $\partial f / \partial x_1$ of $f(x_1, x_2) = x_1^2 x_2$ treats $x_2$ as

For $f(x) = a^\top x$ with fixed $a$, the gradient $\nabla f(x)$ is ______ .