=(1-2分之1)+(2分之1-3分之1)+(3分之1-4分之1)+.....+(99分之1-100分之1) =1-100分之1 =100分之99
必采纳2x3/1+3x4/1+4x5/1+……+99x100=
1个回答
相关问题
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1x1+0x1+2x2+1x2+3x3+2x3+4x4+3x4……99x99+98x99+100x100+99x100
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1X1+2X2+3X3+4X4+5X5.+98X98+99X99+100X100=?
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[1/1x2]+[1/2x3]+[1/3x4]+[1/4x5]+…+[1/99x100].
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[1/1x2]+[1/2x3]+[1/3x4]+[1/4x5]+…+[1/99x100].
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[1/1x2]+[1/2x3]+[1/3x4]+[1/4x5]+…+[1/99x100].
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1 1 1 1 1 ——+——+——+——+```````` —— 2X3 3X4 4X5 5X6 99X100
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1x1一2x2十3x3一4x4十5x5…十99x99一100x100
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1/2x1/3+1/3x1/4+1/4x1/5……+1/99x1/100=?
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简便计算1/2+1/2x3+1/3x4+1/4x5+...+1/99x100
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1/2X1/3+1/3X1/4+1/4X1/5+1/5X1/6+.+1/99X1/100=?