+0  
 
0
78
1
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Find the minimum value of

2x^2 + 2xy + y^2 - 2x + 12y + 4

over all real numbers x and y.

 May 18, 2021
 #1
avatar+177 
+1

Minimum of -81 occurs at x=7,y=-13.

 May 19, 2021

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