Gõ công thức toán LaTeX trong comment Facebook

Write LaTeX math formulas in Facebook comments Use it to comment with math formulas in Facebook comment boxes on thuvienvatly.com. *** How to type math formulas: See the detailed instructions at http://goo.gl/gwABFs - To write a math formula on the same line, put the LaTeX math code between a pair of $ signs. Example: The quadratic equation has the form: $ ax^2+bx+c=0 $ - To write a math formula on a separate line, put the LaTeX math code between a pair of $$ signs. Example: The quadratic equation has the form: $$ ax^2+bx+c=0 $$ - Note that there must be a space between the formula and each $$ or $ delimiter. + Correct: $ x^2 $ or $$ x^2 $$ + Incorrect: $x^2$ or $$x^2$$ *** Where to get LaTeX math code After installing this extension, look at the upper-right corner of the Chrome browser for the X squared icon. Click this icon, then select and compose the formula you want. Once finished, copy the code generated by the editor, paste it into the FB comment box between $ or $$ delimiters as instructed above, and post your comment. After reloading the page, you will see the formula.