Never divide by zero

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2 Comments.

  1. BtaylorTheRogue

    I could be wrong, but aren’t 0, 0-, and 0+ completely different things?

    This is exactly how my pre-calcIII professor taught us to do limits.

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    • lim x->0 only exists if lim x->0- and lim x->0+ exist and are equal. But if 0- and 0+ are equal then 0 is the same.

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