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Unformatted text preview: ), r = g ( x, y ), s = h ( x, y ), t = k ( x, y ). Find w x . Example 4 Suppose f x = cos t , f y = sin t , x = t 2-4 t , and y = ln t . Find df dt . Application The radius of a right circular cylinder is increasing at a rate of 2/min and the height is increasing 3/min. How fast is the lateral surface area changing when the radius is 10 and the height is 12? 3...
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