confusing notation

[djv]

Normally |x| is used for the vector norm

uvadlc_notebooks/docs/tutorial_notebooks/JAX/tutorial2/Introduction_to_JAX.ipynb

Line 457 in 0da8037

"$$ y = \\frac{1}{|x|}\\sum_{i}\\left[\\left(x_i+2\\right)^2+3\\right]$$\n",