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The temperature of a point (x,y) in the plane is given by the expression x^2 + y^2 - 4x + 2y. What is the temperature of the coldest point in the plane?

 Nov 1, 2014

Best Answer 

 #2
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Just complete the square on both x and y.

The minimum value together with the corresponding values of x and y can then be read off.

 Nov 3, 2014
 #2
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+5
Best Answer

Just complete the square on both x and y.

The minimum value together with the corresponding values of x and y can then be read off.

Guest Nov 3, 2014

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