函數(shù)f(x)=cos(2x-π/5)為減函數(shù)的區(qū)間是?
函數(shù)f(x)=cos(2x-π/5)為減函數(shù)的區(qū)間是?
數(shù)學(xué)人氣:754 ℃時間:2019-10-30 15:27:57
優(yōu)質(zhì)解答
0+2kπ0+2kπ<2x-π/5<π+2kπ這是f(x)=cos(x)的減函數(shù)區(qū)間嗎?是的
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