无语了,前面的1 1 1 ———+ —————+···+——————— 神马意思
1 1 1 ———+ —————+···+——————— x(x+1) (x+1)(x+2) ﹙x+999﹚﹙x+100
2个回答
相关问题
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1/x(x+1)+1/(x+1)(x+2)+……+1/(x+999)(x+1000)=?
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1/x(x+1)+1/(x+1)(x+2)+1/(x+2)(x+3)+.+1/(x+999)(x+1000)
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解方程1/(x+1)(x+2)+1/(x+2)(x+3)+...+1/(x+99)(x+100)+1/x+100=199
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1/x(x+1)(x+2)+1/(x+1)(x+2)(x+3).+1/(x+98)(x+99)(x+100)=?
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1/x(x+1+1/(x+1)(x+2)+···1/(x+99)(x+100)计算
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(-1)x(-1)^2x(-1)^3x.x(-1)^100=
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分式:计算1/(x-1)+1/(x-1)(x-2)+1/(x-2)(x-3)+...+1/(x-99)(x-100)
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计算:1 1 1 1 1 ——+ ——+——+.+————+———— 1x2 2x3 3x4 99x100 100x10
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(1-1/2x2)(1-1/3x3).(1-1/100x100)
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计算1/x-1 1/(x-1)(x-2) 1/(x-2)(x-3)… 1/(x-99)(x-100)及规律是什么