You can tell whether a person is nearsighted or farsighted by looking at the width of the

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You can tell whether a person is nearsighted or farsighted by looking at the width of the face through their glasses. If the person’s face appears narrower through the glasses (Fig. 25-47), is the person farsighted or nearsighted?
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Calculus

ISBN: 978-0131429246

9th edition

Authors: Dale Varberg, Edwin J. Purcell, Steven E. Rigdon

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