Whereas domain focuses on the x-values a function is defined on, range focuses on the y-values a function is defined on. If a function is a vending machine you can think of the range as the different candy bars that come out. Finding the domain and range is basically looking at the i...
For the function k(x)=|x|. What is the range of this function? A. All positive numbers B. All real numbers greater than or equal to 0 C. All negative numbers D. All integers 相关知识点: 试题来源: 解析 B。对于函数 k(x)=|x|,绝对值总是大于等于 0,所以值域是所有大于等于 0 的...
根据第一段中“With little more than a pencil, a slide rule and one of the finest mathematical minds in the country, Mrs. Johnson…calculated the precise track that would let Apollo 11 land on the moon in 1969 and, after Neil Armstrong’s history—making moonwalk, let it return to Earth...
A.To raise a problem of teenagers. B.To lead to the main topic of the passage. C.To give the background information of the passage. D.To generalize the whole passage.【小题2】What is true according to the passage? A.Dog’s special stage is permanent. B.Dogs are more obedient at...
(1)What is the function of the questions in Paragraph 1?___A. To introduce the topic.B. To show the author's opinion.C. To provide background information of deciding a career.D. To discuss the differences between the two kinds of jobs.(2)Why does Olinger mention restaurant choosing?
What is the function of the initial paragraph? A. Start a debate B. Outline the plot C. Attract the reader's attention D. Describe the setting 相关知识点: 试题来源: 解析 C。解析:选项 A 开始一场辩论,不是所有文章开头都要开始辩论。选项 B 概述情节,一般在小说类文章中可能出现,但不是所有...
A. To raise the interest of readers. B. To show the structure of the passage. C. To list the function of fluent English. D. To give a clue of the advertisement. 相关知识点: 试题来源: 解析 A 解析:推理判断题。根据第一段前两句“Do you want to speak fluent English like native Englis...
D. A relationship between three sets of numbers. 相关知识点: 试题来源: 解析 B。解析:文章中明确提到“A function is a relationship between two sets of numbers, where each input from one set is associated with exactly one output in the other set.”。 反馈 收藏 ...
1.What is the function of the first paragraph? A. To persuade the readers. B. To show the research conclusion. C. To compare two shopping ways. D. To state the reason for this study. 相关知识点: 试题来源: 解析 1.B 反馈 收藏 ...
题目What is the function of the last paragraph? A. To repeat the main idea B. To provide additional information C. To summarize the whole passage D. To raise new questions 相关知识点: 试题来源: 解析 C。最后一段的作用通常是总结全文。选项 A“重复主旨”表述不准确;选项 B“提供额外信息”...