已知函数f(x),当x,y∈R时,恒有f(xy)=f(x)f(y),且f(-1)=1,f(27)=9,且0小于等于x小于1时 0≤f(x)<1.(1)判断函数f(x)的奇偶性;(2)判断函数f(x)在区间[0,正无穷)上得单调性,
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![已知函数f(x),当x,y∈R时,恒有f(xy)=f(x)f(y),且f(-1)=1,f(27)=9,且0小于等于x小于1时 0≤f(x)<1.(1)判断函数f(x)的奇偶性;(2)判断函数f(x)在区间[0,正无穷)上得单调性,](/uploads/image/z/5118320-56-0.jpg?t=%E5%B7%B2%E7%9F%A5%E5%87%BD%E6%95%B0f%EF%BC%88x%EF%BC%89%2C%E5%BD%93x%2Cy%E2%88%88R%E6%97%B6%2C%E6%81%92%E6%9C%89f%EF%BC%88xy%EF%BC%89%3Df%EF%BC%88x%EF%BC%89f%EF%BC%88y%EF%BC%89%2C%E4%B8%94f%EF%BC%88-1%EF%BC%89%3D1%2Cf%EF%BC%8827%EF%BC%89%3D9%2C%E4%B8%940%E5%B0%8F%E4%BA%8E%E7%AD%89%E4%BA%8Ex%E5%B0%8F%E4%BA%8E1%E6%97%B6+0%E2%89%A4f%EF%BC%88x%EF%BC%89%EF%BC%9C1.%EF%BC%881%EF%BC%89%E5%88%A4%E6%96%AD%E5%87%BD%E6%95%B0f%EF%BC%88x%EF%BC%89%E7%9A%84%E5%A5%87%E5%81%B6%E6%80%A7%EF%BC%9B%EF%BC%882%EF%BC%89%E5%88%A4%E6%96%AD%E5%87%BD%E6%95%B0f%EF%BC%88x%EF%BC%89%E5%9C%A8%E5%8C%BA%E9%97%B4%5B0%2C%E6%AD%A3%E6%97%A0%E7%A9%B7%EF%BC%89%E4%B8%8A%E5%BE%97%E5%8D%95%E8%B0%83%E6%80%A7%2C)
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