作业帮(x-1)/1-(x+1)/1-(x^2+1)/2-(x^4+1)/4-(x^8+1)/8
来源：学生作业帮助网 编辑：作业帮 时间：2024/07/30 22:56:00
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(x-1)/1-(x+1)/1-(x^2+1)/2-(x^4+1)/4-(x^8+1)/8
(x-1)/1-(x+1)/1-(x^2+1)/2-(x^4+1)/4-(x^8+1)/8
(x-1)/1-(x+1)/1-(x^2+1)/2-(x^4+1)/4-(x^8+1)/8
(x-1)/1-(x+1)/1-(x^2+1)/2-(x^4+1)/4-(x^8+1)/8
应该是：1/(x-1)-1/(x+1)-2/(x^2+1)-4/(x^4+1)-8/(x^8+1)(分数先写分子后写分母)
1/(x-1)-1/(x+1)-2/(x^2+1)-4/(x^4+1)-8/(x^8+1)
=(x+1-x+1)/(x^2-1)-2/(x^2+1)-4/(x^4+1)-8/(x^8+1)
=2(x^2+1-x^2+1)/(x^4-1)-4/(x^4+1)-8/(x^8+1)
=4(x^8+1-x^8+1)/(x^8-1)-8/(x^8+1)
=8(x^8+1-x^8+1))/(x^16-1)
=16/(x^16-1)
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