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广东省2020年1月学考考点一
时间：2019-12-10 18:59:08 下载该word文档
广东省1月学考考点例题
考点一：定义域
知识点：常见定义域求法
1. 分母不为0
2. 偶次根式被开方数大于或等于0
3. 对数真数大于0
4. 0次幂底数不为0
例题：
1. ![](https://wkrtcs.bdimg.com/rtcs/image?w=123&md5sum=53e6c991eb19c0ef7e02740d156e587f&sign=2da771b786&rtcs_flag=1&rtcs_ver=4&l=webapp&bucketNum=193&ipr={"t":"img","w":"123","h":"27","c":"5f9dc5f6f6a656106f679ff8c0c44b86.png"})
2. ![](https://wkrtcs.bdimg.com/rtcs/image?w=110&md5sum=53e6c991eb19c0ef7e02740d156e587f&sign=2da771b786&rtcs_flag=1&rtcs_ver=4&l=webapp&bucketNum=193&ipr={"t":"img","w":"110","h":"52","c":"c4207f0f566ba348add497cb7c8f11b0.png"})
3. ![](https://wkrtcs.bdimg.com/rtcs/image?w=158&md5sum=53e6c991eb19c0ef7e02740d156e587f&sign=2da771b786&rtcs_flag=1&rtcs_ver=4&l=webapp&bucketNum=193&ipr={"t":"img","w":"158","h":"29","c":"8f65736abbfd0760a3ea31e2e31cfb39.png"})
4. ![](https://wkrtcs.bdimg.com/rtcs/image?w=122&md5sum=53e6c991eb19c0ef7e02740d156e587f&sign=2da771b786&rtcs_flag=1&rtcs_ver=4&l=webapp&bucketNum=193&ipr={"t":"img","w":"122","h":"54","c":"8a8cd5b9f9ed4a0ea1939a97e220e10d.png"})
5. ![](https://wkrtcs.bdimg.com/rtcs/image?w=42&md5sum=53e6c991eb19c0ef7e02740d156e587f&sign=2da771b786&rtcs_flag=1&rtcs_ver=4&l=webapp&bucketNum=193&ipr={"t":"img","w":"42","h":"21","c":"50bbd36e1fd2333108437a2ca378be62.png"})
6. ![](https://wkrtcs.bdimg.com/rtcs/image?w=80&md5sum=53e6c991eb19c0ef7e02740d156e587f&sign=2da771b786&rtcs_flag=1&rtcs_ver=4&l=webapp&bucketNum=193&ipr={"t":"img","w":"80","h":"21","c":"cb3f13a4f3c64941d036f8bc47685052.png"})
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