1 |
1×2 |
1 |
2×3 |
1 |
3×4 |
1 |
2005×2006 |
即(1-
1 |
2 |
1 |
2 |
1 |
3 |
1 |
3 |
1 |
4 |
1 |
2005 |
1 |
2006 |
(1-
1 |
2006 |
即
2005 |
2006 |
解得:x=2006.
(2)由已知可得:|3x-4|=2,
由绝对值的意义可知:3x-4=2或3x-4=-2,
解得:x=2或x=
2 |
3 |
x |
1×2 |
x |
2×3 |
x |
3×4 |
x |
2005×2006 |
1 |
1×2 |
1 |
2×3 |
1 |
3×4 |
1 |
2005×2006 |
1 |
2 |
1 |
2 |
1 |
3 |
1 |
3 |
1 |
4 |
1 |
2005 |
1 |
2006 |
1 |
2006 |
2005 |
2006 |
2 |
3 |