BizzyBoo

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I was wondering if you could make more videos on the parabola. It would be really helpful if you could explain some of the following topics: the latus rectum, eccentricity, axis of symmetry, focal ...

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I wrote a sentence similar to the following in an essay I am writing: In a fairly large family, there were four children. Is the word fairly being used as a adjective or an adverb in this sentence?

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Is of course a preposition?