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Lecture notes 2011 (slides), pdf.file - Katedra matematiky FEL ČVUT

Lecture notes 2011 (slides), pdf.file - Katedra matematiky FEL ČVUT

Lecture notes 2011 (slides), pdf.file - Katedra matematiky FEL ČVUT

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var Z = cov(X + jY , X + jY ) =<br />

= cov(X, X) + cov(jY , X) + cov(X, jY ) + cov(jY , jY ) =<br />

= 2 + j − j + 1 = 3 .<br />

cov(Z , Z ) = cov(X + jY , X − jY ) =<br />

= cov(X, X) + cov(jY , X) + cov(X, −jY ) + cov(jY , −jY ) =<br />

= 2 + j + j − 1 = 1 + 2j .<br />

Jan Hamhalter http://math.feld.cvut.cz/hamhalte Matematika pro Kybernetiku <strong>Lecture</strong> Notes 343 / 369

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