Find the linearization Upper L (x comma y )of the function f (x comma y )equalsx squared minus 3 xy plus 7 at Upper P 0 (4 comma 3 ). Then find an upper bound for the magnitude StartAbsoluteValue Upper E EndAbsoluteValue of the error in the approximation f (x comma y )almost equalsUpper L (x comma y )over the rectangle R: StartAbsoluteValue x minus 4 EndAbsoluteValueless than or equals0.4, StartAbsoluteValue y minus 3 EndAbsoluteValueless than or equals0.4.