分母有理化,=(√2-1)+(√3-√2)+(√4-√3)+...+(√10-√9)=√10-1.
1/(1+√2)+1/(√2+√3)+1/(√3+2)+.+1/(3+√10)=
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相关问题
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1+1/2+2/2+1/2+1/3+2/3+3/3+2/3+1/3+···+1/10+2/10+···9/10+10/1
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等差数列1+1/2+2/2+1/2+1/3+2/3+2/3+3/3+2/3+1/3+...+1/10+2/10+...+
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(2√1+1√2)/1+(3√2+2√3)/1+(1+4√3+3√4)/1+……(10√9+9√10)/1=?
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1+1/2+2/2+1/2+1/3+2/3+3/3+2/3+1/3+…+1/100+2/100+…+2/100+1/10
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1/2+(1/3+2/3)+(1/4+2/4+3/4)+.+(1/10+2/10+……+9/10)
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(1+1/2+1/3+.1/9)*(1/2+1/3+1/4+.1/10)减(1+1/2+1/3+...+1/10)*(1
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计算:-[-(-312)]=-3[1/2]-3[1/2];-|-[2/3]|=-[2/3]-[2/3];-(-1)10=
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化简:[1/(2+√2)]+[1/(3√2+2√3)]+[1/(4√3+3√4)]+……+[1/(10√9+9√10)]