Question: The temperature at a point (x, y) on a flat metal plate is given by T(x, y) = 60/(1 + x 2 + y 2

The temperature at a point (x, y) on a flat metal plate is given by T(x, y) = 60/(1 + x² + y²), where T is measured in 8C and x, y in meters. Find the rate of change of temperature with respect to distance at the point (2, 1) in

(a) the x-direction and
(b) the y-direction.

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