HessianMatrix (norm[2](x)) in Wolfram

60 Views Asked by At

I'm very new to Wolfram-alpha. I'm trying to compute the Hessian Matrix of ||x|| where x is a vector. I tried this command HessianMatrix (norm[2][x]) in mathematica 13 where I use Wolframalpha input cell but nothing happens. Any idea ? I'm probably lacking some basic knowledge.