y=Asin(ωx+φ)(A>0.ω>0)在π/4处取得最小值,则下列正确的是:A:f(x+π/4)一定是偶函数B:f(x+π/4)一定是奇函数C:f(x-π/4)一定是奇函数D:f(x-π/4)一定是偶函数
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![y=Asin(ωx+φ)(A>0.ω>0)在π/4处取得最小值,则下列正确的是:A:f(x+π/4)一定是偶函数B:f(x+π/4)一定是奇函数C:f(x-π/4)一定是奇函数D:f(x-π/4)一定是偶函数](/uploads/image/z/9292478-14-8.jpg?t=y%3DAsin%28%CF%89x%2B%CF%86%29%EF%BC%88A%3E0.%CF%89%3E0%EF%BC%89%E5%9C%A8%CF%80%2F4%E5%A4%84%E5%8F%96%E5%BE%97%E6%9C%80%E5%B0%8F%E5%80%BC%2C%E5%88%99%E4%B8%8B%E5%88%97%E6%AD%A3%E7%A1%AE%E7%9A%84%E6%98%AF%EF%BC%9AA%3Af%EF%BC%88x%2B%CF%80%2F4%EF%BC%89%E4%B8%80%E5%AE%9A%E6%98%AF%E5%81%B6%E5%87%BD%E6%95%B0B%3Af%EF%BC%88x%2B%CF%80%2F4%EF%BC%89%E4%B8%80%E5%AE%9A%E6%98%AF%E5%A5%87%E5%87%BD%E6%95%B0C%3Af%EF%BC%88x-%CF%80%2F4%EF%BC%89%E4%B8%80%E5%AE%9A%E6%98%AF%E5%A5%87%E5%87%BD%E6%95%B0D%3Af%EF%BC%88x-%CF%80%2F4%EF%BC%89%E4%B8%80%E5%AE%9A%E6%98%AF%E5%81%B6%E5%87%BD%E6%95%B0)
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y=Asin(ωx+φ)(A>0.ω>0)在π/4处取得最小值,则下列正确的是:A:f(x+π/4)一定是偶函数B:f(x+π/4)一定是奇函数C:f(x-π/4)一定是奇函数D:f(x-π/4)一定是偶函数
y=Asin(ωx+φ)(A>0.ω>0)在π/4处取得最小值,则下列正确的是:A:f(x+π/4)一定是偶函数
B:f(x+π/4)一定是奇函数
C:f(x-π/4)一定是奇函数
D:f(x-π/4)一定是偶函数
y=Asin(ωx+φ)(A>0.ω>0)在π/4处取得最小值,则下列正确的是:A:f(x+π/4)一定是偶函数B:f(x+π/4)一定是奇函数C:f(x-π/4)一定是奇函数D:f(x-π/4)一定是偶函数
a
因为w π/4+ φ=2kπ+3π/2,所以f(x+π/4)=Asin(wx+wπ/4+φ)=Asin(wx+2kπ+3π/,= -Acoswx 所以选A
d
d
a吧~
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