(X-1)分之1-(X+1)分之1-(X²+1)分之2-(X的4次方+1)分之4
(X-1)分之1-(X+1)分之1-(X²+1)分之2-(X的4次方+1)分之4
数学人气:790 ℃时间:2019-09-05 09:18:29
优质解答
1/(x-1) - 1/(x+1)-2/(x^2+1)- 4/(x^4 +1)=[(x+1)-(x-1)] /[ (x-1)(x+1)] -2/(x^2+1)- 4/(x^4 +1)=2/(x^2-1)-2/(x^2+1)- 4/(x^4 +1)=[2(x^2+1)-2(x^2-1)] / [(x^2-1)(x^2+1)]- 4/(x^4 +1)=4/(x^4-1)- 4/(x^4 +1)=[...
我来回答
类似推荐