题干
观察下列各式：
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| 2 |
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| 2 |
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| 3 |
| 2 |
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| 6 |
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| 2 |
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| 4 |
| 2 |
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| 3 |
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| 4 |
| 1 |
请你根据上面三个等式提供的信息，猜想：
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| 2 |
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| 6 |
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| 2 |
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| 4 |
| 2 |
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| 3 |
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| 4 |
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有2个整数解，则
的取值范围为…………………（ ）
