Suppose that (a, b) is on the circle x2 + y2 = r2. Show that the line

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Suppose that (a, b) is on the circle x2 + y2 = r2. Show that the line ax + by = r2 is tangent to the circle at (a, b).

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Calculus

ISBN: 978-0131429246

9th edition

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

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Question Posted: Jun 21, 2016 09:28 AM

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Suppose that (a, b) is on the circle x2 + y2 = r2. Show that the line

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The line tangent to the circle at a b will be perpendicular to ...View the full answer

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