函数y=根号下2-x/2x²-3x-2的定义域为( )A.(负无穷,2] B.(负无穷,1] C.(负无穷,-1/2)∪(-1/2,2)
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函数y=根号下2-x/2x²-3x-2的定义域为( )A.(负无穷,2] B.(负无穷,1] C.(负无穷,-1/2)∪(-1/2,2)
函数y=根号下2-x/2x²-3x-2的定义域为( )
A.(负无穷,2] B.(负无穷,1] C.(负无穷,-1/2)∪(-1/2,2)
函数y=根号下2-x/2x²-3x-2的定义域为( )A.(负无穷,2] B.(负无穷,1] C.(负无穷,-1/2)∪(-1/2,2)
首先根号里面的东西必须大于等于零:2-x》0
x《2
其次分数的分母不能为0:2x²-3x-2不等于0
(2x+1)(x-2)不等于0
x不等于-1/2且x不等于2
综上所述定义域为(负无穷,-1/2)∪(-1/2,2) 选C