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what is the meaning of '.' in the below equation?

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Ambika
Ambika 2012-1-11
i saw an equation like tis ... but while running its showing error... pls tell what is the meaning of "." in below equation an how the answer to be come for this equation? F=(X1.-1)^2+(X2.-2.2)^2+1;

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Andrew Newell
Andrew Newell 2012-1-11
What is the "meaning" of an erroneous expression? Probably the intended expression was
F=(X1-1).^2+(X2-2.2).^2+1;
Here .^ is the element-by-element power (see Array arithmetic).

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