Jims utility function is u(x; y) = xy. Jerrys utility function is u(x; y) = 1000xy + 2000. Tammys utility function is u(x; y) = xy(1 xy). Orals utility function is u(x; y) = 1=(10 + 2xy). Marjoes utility function is u(x; y) = x(y + 1000). Pats utility function is u(x; y) = 0:5xy 10000. Billys utility function is u(x; y) = x=y. Franciss utility function is u(x; y) = xy. (1) Who has the same preferences as Jim? (2) Who has indierence curves whose general shape is similar to Jims indierence curves? (3) Explain why the above answers differ