The derivative of (x, y) at P 0 (1, 2) in the direction of i + j

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The derivative of ƒ(x, y) at P₀(1, 2) in the direction of i + j is 2√2 and in the direction of -2j is -3. What is the derivative of ƒ in the direction of -i - 2j? 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: May 08, 2023 02:40 AM

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The derivative of (x, y) at P 0 (1, 2) in the direction of i + j

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Lets first find the unit vector in the direction of i 2j i 2j 12 22 5 So the uni...View the full answer

Thomas Calculus Early Transcendentals

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