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x(x-1)分之1+(x—1)(x-2)分之1+(x-2)(x-3)分之1+(x-3)(x-4)分之1 (x=104)

来源:学生作业帮 编辑:搜搜考试网作业帮 分类:数学作业 时间:2024/07/04 05:18:29
x(x-1)分之1+(x—1)(x-2)分之1+(x-2)(x-3)分之1+(x-3)(x-4)分之1 (x=104)
x(x-1)分之1+(x—1)(x-2)分之1+(x-2)(x-3)分之1+(x-3)(x-4)分之1 (x=104)
1/(x-1)+1/(x-1)(x-2)+1/(x-2)(x-3)+1/(x-3)(x-4)
=[(x-2)+1]/(x-1)(x-2)+1/(x-2)(x-3)+1/(x-3)(x-4)
=1/(x-2)+1/(x-2)(x-3)+1/(x-3)(x-4)
=[(x-3)+1]/(x-2)(x-3)+1/(x-3)(x-4)
=1/(x-3)+1/(x-3)(x-4)
=1/(x-4)
=1/(x-4)
带入的 等于1/100 采纳我吧 亲