Separate operations from operands using space: a + b, not a+b. However, a/b, not a / b.
Use ^ for exponentiation: a to the b power is a^b.
Use parentheses when required, but also to clarify: (ab)/(c^2) is better than ab/c^2 even though normal rules of parentheses use do not require parentheses.
For square root, use ^(1/2): (a^2 + b^2)^(1/2) = c gives the length of the hypotenuse of a right triangle.
For other functions use typical abbreviations: sin(x), atan(1)
Use spaces around relation signs: a < b, not a<b.
Send submissions to: m r . m a t h @ o r d e r i n g c h a o s . c o m