Sth2aMarciatory Sth2aMarciatory

21-11-2016
Mathematics

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minimize Q=x^2+2y^2, where x+y=3

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pkmnmushy pkmnmushy

24-11-2016

The first step you need to do is to rewrite
x+y=3
as y=3-x
Now we can replace the y in the equation with our newfound value for y, which is
y=3-x.
So lets write it now like this
Q=x^2+2(3-y)^2
=x^2+18-12x+2x^2
=3x^2+18-12x
Hope this helps

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