styling mathematics

Hi Robert,

Please have a look at: Science:Math_Exam_Resources/Courses/MATH101/April_2005/Question_3_(c)/Solution_1 where I made several changes in the display of the mathematics. A few points that I suggest:

• Indent math formulas that are on separate lines by typing :<math>formula</math>
• Use the align environment for multiple equalities (see the code in the page I linked)
• in the few cases where the display style is not activated, enforce it manually by typing \displaystyle inside your formula (this is a tex command). See for example the line with 3dy=dx in the linked page.

Thanks for all the good work!