There should also be a "\," before the dt in the integral. See the second mistake on this list: https://www.johndcook.com/blog/2010/02/15/top-latex-mistakes/ ht

There should also be a "\," before the dt in the integral. See the second mistake on this list: https://www.johndcook.com/blog/2010/02/15/top-latex-mistakes/ https://www.johndcook.com/blog/2010/02/15/top-latex-mistakes....