1/(x+10)+1/(x+1)(x+2)+1/(x+2)(x+3)+1/(x+9)(x+10)=2,x等于多少?
来源:学生作业帮 编辑:神马作文网作业帮 分类:数学作业 时间:2024/09/21 10:51:16
1/(x+10)+1/(x+1)(x+2)+1/(x+2)(x+3)+1/(x+9)(x+10)=2,x等于多少?
你是不是写题目的时候少写了点东西?
如果按照你题目所写,可得:
1/(x+1)-1/(x+3)+1/(x+9)=2 (这个貌似很难解出x……)
如果你题目少写了省略号的话,那么题目应该是
1/(x+10)+1/(x+1)(x+2)+1/(x+2)(x+3)+……+1/(x+9)(x+10)=2
则有
1/(x+10)+1/(x+1)(x+2)+1/(x+2)(x+3)+……+1/(x+9)(x+10)
=1/(x+10)+{[1/(x+1)-1/(x+2)]+[1/(x+2)-1/(x+3)]+……+[1/(x+9)-1/(x+10)]}
=1/(x+10)+[1/(x+1)-1/(x+10)]
=1/(x+1)
所以1/(x+1)=2,x= -1/2
如果按照你题目所写,可得:
1/(x+1)-1/(x+3)+1/(x+9)=2 (这个貌似很难解出x……)
如果你题目少写了省略号的话,那么题目应该是
1/(x+10)+1/(x+1)(x+2)+1/(x+2)(x+3)+……+1/(x+9)(x+10)=2
则有
1/(x+10)+1/(x+1)(x+2)+1/(x+2)(x+3)+……+1/(x+9)(x+10)
=1/(x+10)+{[1/(x+1)-1/(x+2)]+[1/(x+2)-1/(x+3)]+……+[1/(x+9)-1/(x+10)]}
=1/(x+10)+[1/(x+1)-1/(x+10)]
=1/(x+1)
所以1/(x+1)=2,x= -1/2
2/x-x+1/x=1 X等于多少
(-x)1(-x)2(-x)3(-x^4)等于多少
(x+1)(x+2)(x+3)(x+4)等于多少
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|
1X+2X+3X…+98X+99X+100X=50500X X等于多少?
1/(x+10)+1/(x+1)(x+2)+1/(x+2)(x+3)+1/(x+9)(x+10)=2,x等于多少?
如果3x*x-x=1那么9x*x*x*x+12x*x*x-3x*x-7x+2001等于多少
y=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10)的导数在x=1
设函数f(x)=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10),
(x-1)(x-2)(x-3)(x-4)=0,求x等于多少,
4x-3(x-5)=2x+(x-1) x等于多少
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x