题目内容
计算:(1-
)×(1-
)×(1-
)×…×(1-
)= .
| 1 |
| 22 |
| 1 |
| 32 |
| 1 |
| 42 |
| 1 |
| 20122 |
考点:有理数的混合运算
专题:计算题
分析:原式利用平方差公式化简,计算即可得到结果.
解答:解:原式=(1-
)×(1+
)×(1-
)×(1+
)×…×(1+
)×(1-
)
=
×
×
×…×
×
×
×
×…×
=
×
=
.
故答案为:
.
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 3 |
| 1 |
| 2012 |
| 1 |
| 2012 |
=
| 1 |
| 2 |
| 2 |
| 3 |
| 3 |
| 4 |
| 2011 |
| 2012 |
| 3 |
| 2 |
| 4 |
| 3 |
| 5 |
| 4 |
| 2013 |
| 2012 |
=
| 1 |
| 2012 |
| 2013 |
| 2 |
=
| 2013 |
| 4024 |
故答案为:
| 2013 |
| 4024 |
点评:此题考查了有理数的混合运算,熟练掌握运算法则是解本题的关键.
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