1/(x-1)(x-3)+1/(x-3)(x-5)+1/(x-5)(x-7)+...+1/(x-97)(x-99)这道题该怎么做?
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1/(x-1)(x-3)+1/(x-3)(x-5)+1/(x-5)(x-7)+...+1/(x-97)(x-99)这道题该怎么做?1/(x-1)(x-3)+1/(x-3)(x-5)+1/(x-5)(x
1/(x-1)(x-3)+1/(x-3)(x-5)+1/(x-5)(x-7)+...+1/(x-97)(x-99)这道题该怎么做?
1/(x-1)(x-3)+1/(x-3)(x-5)+1/(x-5)(x-7)+...+1/(x-97)(x-99)这道题该怎么做?
1/(x-1)(x-3)+1/(x-3)(x-5)+1/(x-5)(x-7)+...+1/(x-97)(x-99)这道题该怎么做?
1/(x-1)(x-3)+1/(x-3)(x-5)+1/(x-5)(x-7)+...+1/(x-97)(x-99)
=(1/2)[1/(x-3)-1/(x-1)+1/(x-5)-1/(x-3)+...+1/(x-99)-1/(x-97)]
=(1/2)[-1/(x-1)+1/(x-99)]
=49/(x-1)(x-99)
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(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
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