compute the mean and covariance matrix of Y.

Let X= [X1 X2 X3] be a three-dimensional zero-mean Gaussian random vector with the covariance matrix . If the new random vector Y is defined as Y1= 5X1 -3X2 -X3 Y2= -X1+3X2-X3 Y3= X1+X3, Compute the mean and covariance matrix of Y