ok now add this to your bookmarks bar
javascript:(function(){function%20e(e){var%20t='.MathJax%20.mn%20{background:%20inherit;}%20.MathJax%20.mi%20{color:%20inherit;}%20.MathJax%20.mo%20{background:%20inherit;}';var%20a=e.createElement('style');a.innerText=t;try{a.textContent=t}catch(n){}e.getElementsByTagName('body')[0].appendChild(a);var%20r=e.createElement('script'),i;r.src='
https://c328740.ssl.cf1.rackcdn.com/mathjax/latest/MathJax.js?config=TeX-MML-AM_HTMLorMML.js';r.type='text/javascript';i='MathJax.Hub.Config({tex2jax:{inlineMath:[[\'$\',\'$\']],displayMath:[[\'\\\\[\',\'\\\\]\']],processEscapes:true}});MathJax.Hub.Startup.onload();';if(window.opera)r.innerHTML=i;else%20r.text=i;e.getElementsByTagName('head')[0].appendChild(r)}function%20t(t){function%20a(e){var%20a=t.document.createElement('span');a.setAttribute('class','MathJax_Preview');var%20n=t.document.createElement('script');n.setAttribute('type','math/tex');n.innerText=e.getAttribute('alt');var%20r=e.parentElement;r.replaceChild(n,e);a.appendChild(e);r.insertBefore(a,n)}var%20n=t.document.getElementsByClassName('latex');for(var%20r=0;r%3Cn.length;r++){a(n[r])}if(t.MathJax===undefined){e(t.document)}else{t.MathJax.Hub.Queue(new%20t.Array('Typeset',t.MathJax.Hub))}}var%20a=document.getElementsByTagName('iframe'),n,r;t(window);for(n=0;n%3Ca.length;n++){r=a[n].contentWindow||a[n].contentDocument;if(!r.document)r=r.parentNode;t(r)}})();
and then click it. you're welcome.