求 1/(√2+√1)+1/(√3+√2)+1/(√4+√3)+ …… +1/(√9+√8) 的值。
2023-06-12
A. √2
B. 2
C. √8
D. 3
参考答案:B
B. 2
C. √8
D. 3
参考答案:B
解题指导: =(√2-1+√3-√2+√4-√3+…+√9-√8)=√9-1=2。故答案为B。
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2023-06-12
解题指导: =(√2-1+√3-√2+√4-√3+…+√9-√8)=√9-1=2。故答案为B。
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