A.最大值 B.最小值 C.中點 D.零點
A.收入效應(yīng)和邊際效應(yīng)B.規(guī)模效應(yīng)和替代效應(yīng)C.收入效應(yīng)和替代效應(yīng)D.規(guī)模效應(yīng)和收入效應(yīng)
A.MRPL=W B.MRPK=W C.MRPL=r D.MRPK=r