Dear Sir/Madam,
I have a problem that requires your help. Referring to the covariance equation below (values are in polar form)
mean(XY)-mean(X)mean(Y)=covariance(X,Y)
where X=[x1, x2] and Y=[y1, y2], and X and Y are not independent variables.
If the known values are:
i) amplitudes and angles of x1 and x2, and mean of X
ii) amplitudes of y1 and y2
iii) covariance (X,Y)
is it possible for me to calculate the angles of y1 and y2?
I have tried various polar form identities but failed. I even tried converting to cartesian form and used the trigonometric formulas, but again to no avail. Could you please help me?
I have a problem that requires your help. Referring to the covariance equation below (values are in polar form)
mean(XY)-mean(X)mean(Y)=covariance(X,Y)
where X=[x1, x2] and Y=[y1, y2], and X and Y are not independent variables.
If the known values are:
i) amplitudes and angles of x1 and x2, and mean of X
ii) amplitudes of y1 and y2
iii) covariance (X,Y)
is it possible for me to calculate the angles of y1 and y2?
I have tried various polar form identities but failed. I even tried converting to cartesian form and used the trigonometric formulas, but again to no avail. Could you please help me?