2. E. for example P = 7/3 , Q =1/3 , under both situation 1 and 2 ,P+Q not a integer and of course, easily to get integer when P,Q are integers.作者: tongxun 时间: 2002-9-24 18:11
cook:
but the condition 2 is p+2Q。if Q=1/3, p + 2Q is not a integer。作者: brigittew 时间: 2002-9-24 20:55