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Chapter2: Second-order Linear Odes
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(5) Show that for any real number x and a subset A of R, exactly one of the following holds: (a) x is an interior
point of A, (b) x is a boundary point of A or (c) x is an exterior point of A.
E
Transcribed Image Text:(5) Show that for any real number x and a subset A of R, exactly one of the following holds: (a) x is an interior point of A, (b) x is a boundary point of A or (c) x is an exterior point of A. E
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