找规律:-1*1⼀2=-1+1⼀2,-1⼀2*1⼀3=-1⼀2+1⼀3,-1⼀3*1⼀4=-1⼀3+1⼀4

2024-12-31 10:50:03
推荐回答(1个)
回答1:

-1/n * 1/n+1=-1/n + 1/n+1