When I use MathJax, sometimes the fraction lines got a different thickness (below imgage). Why?

Another question is how to increase the vertical space between the lines, because in \begin{align} ... \end{align} the lines are so close to each other and it's hard to read them (as you can see on the below sample image).

enter image description here

closed as off topic by Loop Space, yo', lockstep, diabonas, Stefan Kottwitz Oct 4 '12 at 21:19

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  • MathJaX doesn't use the same program as TeX so questions about MathJaX aren't really on topic here. You will probably have more luck at the MathJaX Help Forums – Loop Space Oct 4 '12 at 18:59
  • See my response here for details of why this happens in MathJax. – Davide Cervone Oct 5 '12 at 15:43
  • 4
    Ps, you can use \\[dimen] to add extra space between lines of an alignment. So \\[5pt] would add an extra 5 points of space between the lines at that breakpoint. – Davide Cervone Oct 10 '12 at 17:15
  • For everybody who encounters this issue. Say you have a presentation tomorrow and really want all fractions to appear at all costs, you can use your own definition of fractions (with thicker lines): \begin{align}\genfrac{}{}{1pt}{0}{a+b}{c+d}\frac{a+b}{c+d} – Lukas Nov 11 '15 at 21:43

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