lim(x趋向于kπ+π/2)=limxcosx/sinx=0 在x=kπ+π/2处无定义吗,为什么,就因为等于零吗
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lim(x趋向于kπ+π/2)=limxcosx/sinx=0 在x=kπ+π/2处无定义吗,为什么,就因为等于零吗
![lim(x趋向于kπ+π/2)=limxcosx/sinx=0 在x=kπ+π/2处无定义吗,为什么,就因为等于零吗](/uploads/image/z/4572655-7-5.jpg?t=lim%28x%E8%B6%8B%E5%90%91%E4%BA%8Ek%CF%80%2B%CF%80%2F2%EF%BC%89%3Dlimxcosx%2Fsinx%3D0+%E5%9C%A8x%3Dk%CF%80%2B%CF%80%2F2%E5%A4%84%E6%97%A0%E5%AE%9A%E4%B9%89%E5%90%97%2C%E4%B8%BA%E4%BB%80%E4%B9%88%2C%E5%B0%B1%E5%9B%A0%E4%B8%BA%E7%AD%89%E4%BA%8E%E9%9B%B6%E5%90%97)
在x=kπ+π/2时
cosx=0 ;sinx=+1或-1
limxcosx/sinx=0
cosx=0 ;sinx=+1或-1
limxcosx/sinx=0
lim(x趋向于kπ+π/2)=limxcosx/sinx=0 在x=kπ+π/2处无定义吗,为什么,就因为等于零吗
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