If r - r be a function such that sx,y) = (ecosy, e'siny). then fis a1-1 function is onto function and 1-1 both uthe jacobian matrix ofÍ is not invertible at som

If R - R be a function such that Sx,y) = (ecosy, e'siny). Then fis a1-1 function is onto function and 1-1 both UThe jacobian matrix ofÍ is not invertible at some point of R< none of these