Often when creating reports for labs or something like that I find myself writing something like:
As the formula is often on its own line, once I say "(...) where e (...)" should the 'W' be capital or lowercase? What I mean is that changing from formula back to text is like starting a new line.
Additional question (if I am allowed):
In the preamble to the formula "(...) for any real number x (...)", should I put a colon (:), a comma (,), a dot (.), or nothing (as it is in this question)?
The possibilities are
"(...) for any real number x, eix (...)", f(x)=(z-y)e0.01-0.01x+y
"(...) for any real number x: eix (...)",
"(...) for any real number x. eix (...)"
and as it is in the question (no punctuation after "x").
Note: In wikipedia they use a dot.