计算:a(a+1) +1/(a+1)(a+2) +1/(a+2)(a+3) + +1/(a+2004)(a+2005)
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/29 07:53:06
计算:a(a+1) +1/(a+1)(a+2) +1/(a+2)(a+3) + +1/(a+2004)(a+2005)
计算:a(a+1) +1/(a+1)(a+2) +1/(a+2)(a+3) + +1/(a+2004)(a+2005)
计算:a(a+1) +1/(a+1)(a+2) +1/(a+2)(a+3) + +1/(a+2004)(a+2005)
1/(a+1)(a+2)=1/(a+1)-1/(a+2)
同理:1/(a+2)(a+3)=1/(a+2)-1/(a+3)
所以:a(a+1) +1/(a+1)(a+2) +1/(a+2)(a+3) + +1/(a+2004)(a+2005)
=a(a+1)+1/(a+1)-1/(a+2)+1/(a+2)-1/(a+3)+.+1/(a+2004)-1/(a+2005)
=a(a+1)+1/(a+1)-1/(a+2005)
希望你的第一项没写错,但愿是a/(a+1)
这样一来,答案就是1-1/(a+2005)
计算:1-a-a(1-a)-a(1-a)
计算:[a-(1/a)]/a^2-2a+1/a
计算:a(a+1)=?
计算 a^2/1+a+1-a
(a+1)(a+2)(a-3)计算
计算:a²/a-1-a-1.
怎么计算(a+1)(a*a+1)a*a*a*a+1).a(100)+1)
(a-a/a+1)/(a*a-2a)*(a+1)/(a*a+3a+2)要详细的计算说明!
计算[(a-1)/a*a-4*a+4]-[(a+2)/(a*a-2*a*a)]-4/a
计算:2a-(a-1)+a^2-1/a+1;
计算:a+1/a-1+a-2/1-a
计算4a /(a^2-1)+(1+a)/(1-a)
计算/1-a/+/2a+1/+/a/ (a
计算a-1/a÷(a-1/a)=
计算(a+1)(a+2)(a+3)(a-6)
计算(a三次方-a)/(a²+2a+1)
计算:a分之a+1÷(a²+a)
计算,(a+3)(a-1)+a(a-2)