A New Year Gift:

Introducing a new feature: Check your answer!
To your left, you should see something asking for your answer. This is automated, so it needs a syntax:

sin(A) is good. Sin(a)/SIN(A)/Sin(A) etc are not..
log(A), ln(A), exp(2) are all good. Don't write e^x.
'g' is g. Its not 9.8, unless specified.
In the question field, choose the question title.

For example: the answer to the last question was "both" (quotes for clarity). The title was "A Frozen Lake". Try it. If it does not work (which is probable as I wrote the code), leave a comment.