函数Y=log(1/2)^(2X^2 -3x +1 )的递减区间为____ ]A.(1,+00 )B.(-00,3/4] C.(1/2.+00)D.(-00,1/2 ]

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函数Y=log(1/2)^(2X^2 -3x +1 )的递减区间为____ ]A.(1,+00 )B.(-00,3/4] C.(1/2.+00)D.(-00,1/2 ]
函数Y=log(1/2)^(2X^2 -3x +1 )的递减区间为____ ]
A.(1,+00 )
B.(-00,3/4]
C.(1/2.+00)
D.(-00,1/2 ]

函数Y=log(1/2)^(2X^2 -3x +1 )的递减区间为____ ]A.(1,+00 )B.(-00,3/4] C.(1/2.+00)D.(-00,1/2 ]
首先要考虑的是定义域的问题,x必大于1或小于1/2
排除BC
再由单调性,减增为减,故选A