问题
选择题
函数y=
|
答案
函数y=
的定义域为1 tanx
，x≠kπ+
，k∈Zπ 2 tanx≠0
∴x≠kπ+
，k∈Z且x≠kπ，k∈Z，π 2
即x≠
，k∈Z．kπ 2
故选B．
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函数y=
|
函数y=
的定义域为1 tanx
，x≠kπ+
，k∈Zπ 2 tanx≠0
∴x≠kπ+
，k∈Z且x≠kπ，k∈Z，π 2
即x≠
，k∈Z．kπ 2
故选B．
| 完形填空。 | |||
| Today is Monday, the 1_________ day of the week. It is sunny, because I feel 2_________. At 7: 00, I have breakfast 3_________ the morning. Tomorrow is 4_________, Children's Day. I can have fun at 12: 00, I finish my homework and have 5_________.
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