题目内容
对实数a、b,定义“★”运算规则如下:a★b=
,则
★(
★
)=______.
|
7 |
2 |
3 |
∵
★
=
,
∴
★(
★
)
=
★
=
=
=2.
故答案为:2.
2 |
3 |
3 |
∴
7 |
2 |
3 |
=
7 |
3 |
=
(
|
=
4 |
=2.
故答案为:2.
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题目内容
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7 |
2 |
3 |
2 |
3 |
3 |
7 |
2 |
3 |
7 |
3 |
(
|
4 |