Let (x, y) = x 2 + y 2 and r(t) = (cos t, sin t). (a)
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Let ƒ(x, y) = x2 + y2 and r(t) = (cos t, sin t).
(a) Find d/dtƒ(r(t)) without making any calculations. Explain.
(b) Verify your answer to (a) using the Chain Rule.
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a The level curves of fx y are the circles y r Since ...View the full answer
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