which we write on the right hand side. Iron plus oxygen reacts to form iron oxide. And that’s your word equation! What word is used to describe the chemicals that are made during a chemical ...

He inserts a few lines of LaTeX code into a web form — no installation is required — and MathJax renders equations in a web page. Word users can also write directly in LaTeX syntax ...

Al-­Khwārizmī didn't write equations in the symbolic ... But he systematically set out word-­form linear and quadratic equations, with algorithmic methods for solving them — that is, for ...