In this lesson, we've seen how to build fractions and roots using the , and elements. We noticed some special feature of these elements, namely the fraction and radical symbol. We've seen how to use the linethickness attribute to draw fractions without bars. In the next article, we will continue with basic math notations and consider scripts....document contains a MathML formula and you must check all subtrees...to a subtree in that MathML formula. Once you are done, you can...