This is my first post here, I've been struggling with a problem for maths course, and would appreciate any guidelines on how to start tackling it (not asking for the answer, just some guidelines on how to begin).
$$ \min_{\mathbf{x}} \phi(\mathbf{x}) = \frac{1}{2} ||g(\mathbf{x}) - b||^2 $$
And they also tell me that the Jacobian of $g(\mathbf{x}) = A$. There's no other additional information, so I'm assuming that the domains and codomains are $\mathbb{R}^n$
Really would appreciate any tips on how to begin!
Thanks in advance.