求以下定义域(1)y=√x²-4x+3 (2)y=㏒1/2(5x-2x²-2)
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求以下定义域(1)y=√x²-4x+3 (2)y=㏒1/2(5x-2x²-2)
求以下定义域(1)y=√x²-4x+3 (2)y=㏒1/2(5x-2x²-2)
求以下定义域(1)y=√x²-4x+3 (2)y=㏒1/2(5x-2x²-2)
(1)y=√x²-4x+3
x²-4x+3>=0
(x-1)(x-3)>=0
x=3
(2)y=㏒1/2(5x-2x²-2)
5x-2x²-2>=0
2x²-5x+2