y=√(sinx·cotx)
函数有意义则sinxcosx≥0
即sinx*cosx/sinx≥0
所以{cosx≥0
{sinx≠0
==> {2kπ-π/2≤x≤2kπ+π/2,k∈Z
{x≠kπ k∈Z
==> 2kπ-π/2≤x
函数y=根号下sinx·cotx的定义域为_______.
函数y=根号下sinx·cotx的定义域为_______.
数学人气:681 ℃时间:2020-01-25 23:13:46
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