初中关于有理数减法的计算题
2025-10-10
(a-1)的绝对值大于等于0,(b-2)的绝对值大于等于0,而/a-1/+/b-2/=0,所以(a-1)的绝对值等于0,(b-2)的绝对值等于0,所以a=1,b=2。1/a·b+1/(a+1)·(b+1)+1/(a+2)·(b+2)+....+1/(a+2007)·(b+2007)=1/1×2+1/2×3+1/3×4+......
2025-10-10
(a-1)的绝对值大于等于0,(b-2)的绝对值大于等于0,而/a-1/+/b-2/=0,所以(a-1)的绝对值等于0,(b-2)的绝对值等于0,所以a=1,b=2。1/a·b+1/(a+1)·(b+1)+1/(a+2)·(b+2)+....+1/(a+2007)·(b+2007)=1/1×2+1/2×3+1/3×4+......