论文部分内容阅读
一、取整函数设x∈R,用[x]表示不大于x的最大整数,则称y=[x]为取整函数,也叫高斯函数.例1某学校要召开学生代表大会,规定各班每10人推选一名代表,当各班人数除以10的余数大于6时再增选一名代表,那么各班可推选人数y与该班人数x之间的函数关系式用取整函数y=[x]([x]表示不大于x的最大整数)可以表示为解依题意知,若x=16,则y=1,由此可知C项、D项错误;若x=17,则y=2,由此可知A项错误.
First, the whole function set x∈R, [x] represents the largest integer not greater than x, then said y = [x] for the rounding function, also known as Gaussian function Example 1 a school to hold student congress, the provisions of Every 10 people in each class to select a representative, when the number of people divided by 10 is greater than 6 and then elected a representative, then the number of classes can be selected for each class y and the number of people x function between the use of rounding The function y = [x] ([x] represents the largest integer not greater than x) can be expressed as a solution to the problem. If x = 16, then y = 1, 17, then y = 2, we can see A error.