函数f（x）= {2x,x≥1(x−1)2,x<1 ，若f（x）≥4，则x的取值范围为_1．_刷题宝

题干

函数f（x）= {2x,x≥1(x−1)2,x<1 ，若f（x）≥4，则x的取值范围为____．

上一题下一题 0.0难度选择题更新时间:2019-05-13 10:43:26

答案(点此获取答案解析）

（﹣∞，﹣1∪2，+∞）

同类题1

下列描述的情况不属于遗传性状的是（）

同类题2

有机化合物C₄H₈是生活中的重要物质，下列关于C₄H₈的说法中错误的是（）

同类题3

Lucy is always ____（有礼貌的）to others.

同类题4

选出下列划线词语解释欠妥的一组。（）

同类题5

根据材料内容的理解，选择正确答案。

	Nice to meet you. My name is Sally Simpson. Sally is my first name. Simpson is my last name. I'm in Huangzhou, China now. I'm a student in HZFL Middle School. My classroom is very nice. My telephone number is 832—4895.
	Good morning! I'm Wu Lei. My first name is Lei and my last name is Wu. I'm in Macheng now. I'm a student in HY Middle School. My phone number is 291—5638. And my QQ number is 83250194.
	Hi! My name is Dong Huixia. I'm an English teacher in JM Middle School, Huangmei. I like (喜欢) my students. I'm their good friend. My telephone number is 338—0479.
	Hello! My name is Mike Brown. I'm in Wuxue, China now. I'm a student in SY Middle School. My telephone number is 625—1899. And my QQ number is 389410663. My parents are in the school, too.

小学学科试题库

初中学科试题库

高中学科试题库