# Tag Info

Let's look at the definition of gradient: In vector calculus, the gradient of a scalar-valued differentiable function $f$ of several variables is the vector field (or vector-valued function) $\nabla f$ whose value at a point $p$ is the vector $r^{[a]}$ whose components are the partial derivatives of $f$ at $p .^{[1][2][3][4][5][6][7][8][9]}$ That is, for \$f:...