(1)27+(+4+4.5-1) =27+(8.5-1) =27+7.5 =34.5(元). 答:星期三收盘时,每股34.5元; (2)27+(+4+4.5-1-2.5-6) =27+[(+4+4.5)+(-1-2.5-6)] =27+[8.5+(-9.5)] =27+(-1) =26(元). 答:本星期内每股最低价是26元; (3)因为星期一和星期二股票上升,而星期三股票开始下跌, 所以星期二抛售时,股票获利最大, 最大为:{[27+(+4+4.5)]-27}×1000 =(+4+4.5)×1000 =8.5×1000 =8500 (元). |