a wire 4 ft long cut into two pieces. One piece forms a circle with a radius r and the other forms a square of side x. Choose x to minimize the sum of their areas.

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Q: | Let ƒ(x) = 8x sin¯¹(x). Find f'(x). ƒ'(x) = Find f'(0.4). f'(0.4) = 0

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A: A ship sails south 2km, then turns West. Rate of ship sailing = 10kph

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