若函数fx=㏒2(3x²-mx+2)在区间1,正无穷上单调递增,求m取值范围
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![若函数fx=㏒2(3x²-mx+2)在区间1,正无穷上单调递增,求m取值范围](/uploads/image/z/5501602-10-2.jpg?t=%E8%8B%A5%E5%87%BD%E6%95%B0fx%EF%BC%9D%E3%8F%922%EF%BC%883x%26%23178%3B%EF%BC%8Dmx%EF%BC%8B2%EF%BC%89%E5%9C%A8%E5%8C%BA%E9%97%B41%2C%E6%AD%A3%E6%97%A0%E7%A9%B7%E4%B8%8A%E5%8D%95%E8%B0%83%E9%80%92%E5%A2%9E%2C%E6%B1%82m%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B4)
若函数fx=㏒2(3x²-mx+2)在区间1,正无穷上单调递增,求m取值范围
若函数fx=㏒2(3x²-mx+2)在区间1,正无穷上单调递增,求m取值范围
若函数fx=㏒2(3x²-mx+2)在区间1,正无穷上单调递增,求m取值范围
f(x)=log2(3x²-mx+2)
=log2(3(x-m/6)²+m²/12+2)
m/6=1
m=6