MAT102H5 Lecture Notes - Lecture 8: Empty Set
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Interval notation if (cid:1853),(cid:1854) , with (cid:1853) (cid:1854), then [(cid:1853),(cid:1854)]={ ;a x b} this is a closed interval if (cid:1853),(cid:1854) , with (cid:1853) (cid:1854) , then (cid:4666)(cid:1853),(cid:1854)(cid:4667)={ ;a