问题
填空题
设集合M={x|-1＜x＜2}，N={x|x-k≤0}，若M∩N≠φ，则k的取值范围是______．
答案
∵集合M={x|-1＜x＜2}，N={x|x-k≤0}={x|x≤k}，
且M∩N≠φ，如图所示；
∴k的取值范围是：[-1，+∞）．
故答案为：：[-1，+∞）．
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设集合M={x|-1＜x＜2}，N={x|x-k≤0}，若M∩N≠φ，则k的取值范围是______．
∵集合M={x|-1＜x＜2}，N={x|x-k≤0}={x|x≤k}，
且M∩N≠φ，如图所示；
∴k的取值范围是：[-1，+∞）．
故答案为：：[-1，+∞）．
| 根据首字母和句意填空。 |
| 1. My cousin is an a_________. 2. He had to work in a building-field to make a l________. 3. I don't want to wear my j________. 4. This is the most important e________ of the year. 5. I hope our football team will be l________ in Asia Cup. 6. We can find the kind-hearted person e_________. 7. The managers of the centre are on their v_________ to America. 8. I r________ that getting up early is good for our health. 9. Did you c_________ the best one? We have no time. 10. Children must wash their clothes t_________. |