Error, paperback, 2000 (with corrections), Ch. 6, ex 24 Nov 13, 2016 15:46:46 GMT Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by Admin on Nov 13, 2016 15:46:46 GMT GaryI think that there is an error in the statement of exercise 24 in the book on page 337. In part (ii), I think it should read"...and (ad-bc)<0".For details see my solution to exercise 24.Vasco