相鄰對(duì)稱軸的距離=T/2=π/2
T=π
所以w=2
偶函數(shù)則對(duì)稱軸x=0
即f(0)=±1
a-π/6=kπ+π/2
a=kπ+2π/3
所以a=2π/3
所以f(π/8)=2sin(π/4+2π/3-π/6)
=2sin(3π/4)
=√2
已知y=2sin(wx+a-pai/6) 0
已知y=2sin(wx+a-pai/6) 00 為偶函數(shù) 且它的圖像相鄰對(duì)稱軸的距離為pai/2 求f(pai/8)的值
數(shù)學(xué)人氣：128 ℃時(shí)間：2020-04-17 18:29:37
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