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is a symbol, typically a number with one fixed value.
Why on earth did you just deleted my answer? "Constant" have different meanings. No offense.
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Noooooo haha xD look guys the question's under the category Math so basically we're talking bout math here lol but ya somehow
Hahaha. @pondsgulle12 thanks for that. Maybe you just made a mistake, or your answer may be improper, and this questions' category is Math (just like what @ella said) so basically we are talking about math here, use common sense please and @MJAndreas, thank you for making me feel like an awesome moderator, :)
Meaning  occurring  continuously over a period of time