若a小于0,b大于0,则b分之a【 】0,若a大于0,b大于0则b分之a【 】02,若a=0,b小于0,则b分之a【 】0,若a大于0,b小于0,则b分之a【 】0

问题描述:

若a小于0,b大于0,则b分之a【 】0,若a大于0,b大于0则b分之a【 】0
2,若a=0,b小于0,则b分之a【 】0,若a大于0,b小于0,则b分之a【 】0

若a小于0,b大于0,则b分之a【 】0
2,若a=0,b小于0,则b分之a【 = 】0,若a大于0,b小于0,则b分之a【