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Unformatted text preview: 4. A glass of cold milk from the refrigerator is left on the counter on a warm summer day. Its temperature y (in degrees Fahrenheit) after sitting on the counter t minutes is f(t) = 72 - 30 (0.98) t . a) What is the temperature of the refrigerator? b) What is the temperature of the room? c) When is the milk warming up the fastest? d) When is the temperature of the milk 55F ? e) At what rate is the milk warming when its temperature is 55F? 5. Find the derivatives of the following: a) y = ln (tan 2x) b) y = log 3 (tan 2x) c) x x e y = ln e - 1 d) y = (ln 3) t...
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