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 one year ago
If \[x_{1}, x_{2},...,x_{n}\] are given numbers, show that \[(x_{1}x)^{2} +(x_{2}x)^{2}+...+(x_{n}x)^{2}\] is least when x is the arithmetic mean of \[x_{1}, x_{2},..., x_{n}.
 one year ago
If \[x_{1}, x_{2},...,x_{n}\] are given numbers, show that \[(x_{1}x)^{2} +(x_{2}x)^{2}+...+(x_{n}x)^{2}\] is least when x is the arithmetic mean of \[x_{1}, x_{2},..., x_{n}.

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Azteck
 one year ago
Best ResponseYou've already chosen the best response.1\[x_{1}, x_{2},..., x_{n}\]

LogicalApple
 one year ago
Best ResponseYou've already chosen the best response.4Let S be the summation \[S = (x _{1}  x)^{2} + (x _{2}  x)^{2} + . . . + (x _{n}  x)^{2}\] Find the derivative of S

LogicalApple
 one year ago
Best ResponseYou've already chosen the best response.4Remember that the only variable here is x, all the x's with subscripts are constants.

Azteck
 one year ago
Best ResponseYou've already chosen the best response.1Yep. I'm just getting the sum of that AP

Azteck
 one year ago
Best ResponseYou've already chosen the best response.1Yeah this one was easier than the question before. Thanks.
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