1/(1-x) - 3/(1-x^3) 求当X无限趋于1时的极限..
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/09 03:40:22
1/(1-x) - 3/(1-x^3) 求当X无限趋于1时的极限..
1/(1-x) - 3/(1-x^3) 求当X无限趋于1时的极限..
1/(1-x) - 3/(1-x^3) 求当X无限趋于1时的极限..
原式=(1+x+x^2)/(1-x^3)- 3/(1-x^3)
=(x-1)*(x+2)/(1-x^3)
=-(x+2)/(1+x+x^2)
当X无限趋于1时的极限为-1
1/(1-x) - 3/(1-x^3)
=(x^2+x-2)/(1-x^3)
=lim =(2x+1)/(-3x^2)
(x→1)
=-1
*-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 X X ||
填九宫格帮帮忙.x x 6 x x 7 x x 98 x x x 3 x 1 x x 9 x x 6 x 5 x 3 x x x 3 x x x x 1 8x x x 9 x 1 x x x2 1 x x x x 6 x x x 6 x 7 x 3 x x 1 x x 9 x 2 x x x 47 x x 8 x x 5 x x
七年级下册政治复习提纲(山东人民出版社)第五单元是 青春的脚步 青春的气息别弄错了啊!格式:X X X X X X X X X 1、X X X X X X X X X X.2、X X X X X X X X X.3、X X X X X X X X X X X.
/X-3/-/X-1/
(3x/x-1)
x-3(x-1)
| X+1 |>| X-3 |
x+3/x-1
(x +1)(x-3)
(x+3)(x-1)
|x+1|-|x-3|
(x+1)(x-3)
x+2/x+1-x+3/x+2-x+4/x+3+x+5/x+4
[x(x+1)+x平方(x-1)]+(-3x)
x{x+1}{x-1}}x-2}{x-3}-40
x^5-x^4+x^3-x^2+x-1
|x+1|-|x|+|x-2|-|-x+3|已知x+2
(X+1)X(X+2)X(X+3)=504