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Question: someone help me solve this please and thinks...

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Someone help me solve this? Please and Thinks
I. The centripedal acceleration of a particle moving in a circle is a-: u%, where v is the velocity and r is the radius of the circle. Approximate the change in the acceleration if v increases by 0.1m/sec from 4m/sec and r decreases by 0.2m from 10m.
2. The temperature distribution in a square 16 foot room containing a heat- ing element and vent fan is given by T(x, y) = 72-2x2-y2 + 8x + 2y where the point (x, y) is your location on the floor of that room and temperature is given in Fahrenheit. Find the location in the room where the temperature is at its highest. What is the maximum temperature?
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