Is it true that a continuous function that is never zero on an interval never changes sign

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Is it true that a continuous function that is never zero on an interval never changes sign on that interval? Give reasons for your answer.

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Thomas Calculus Early Transcendentals

ISBN: 9780321884077

13th Edition

Authors: Joel R Hass, Christopher E Heil, Maurice D Weir

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Question Posted: Apr 14, 2023 02:16 AM

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Is it true that a continuous function that is never zero on an interval never changes sign

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Thomas Calculus Early Transcendentals

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