Merge pull request #617 from abhinavc/master

Moved calculator hints to main body
added versions
Merge remote-tracking branch 'upstream/master'

Conflicts:
	vault/2/3kh/ppa0m/question.tex
Merge pull request #618 from adamarla/master

added versions
Merge pull request #619 from abhinavc/master

Solution corrected 1/k3h/cpf17
Merge pull request #620 from abhinavc/master

Minor correction
Merge pull request #621 from abhinavc/master

Reset equation numbering with each new question
question on integral calc
Merge pull request #622 from adamarla/master

question on integral calc
[cron-git-commit] @ 15.50
question on appl of derivatives
Merge pull request #623 from adamarla/master

question on appl of derivatives
[cron-git-commit] @ 17.20
[cron-git-commit] @ 14.04
Questions on DB
Merge pull request #624 from adamarla/master

Questions on DB
[cron-git-commit] @ 12.24
[cron-git-commit] @ 12.28
[cron-git-commit] @ 12.30
[cron-git-commit] @ 12.32