首页
登录
职称英语
[img]ct_gre5image082[/img]In the rectangular coordinate system above, for how m
[img]ct_gre5image082[/img]In the rectangular coordinate system above, for how m
游客
2025-02-24
8
管理
问题
In the rectangular coordinate system above, for how many of the points that lie inside or on the boundary of the shaded region are both coordinates integers?
选项
A、6
B、7
C、8
D、9
E、10
答案
E
解析
上图所示的直角坐标系中,位于阴影区内或边界上的点坐标是整数的点有多少个?
解:本题的正确答案为(E)。由图可知,阴影区由y=x,y=0,x=3这三条直线围成,其边界为这三条直线。因此阴影区内点的坐标范围为0≤x≤3,0≤y≤3,y≤x。当x和y只能取整数时,所求的点为:(0,0),(0,1),(0,2),(0,3),(1,1),(1,2),(1,3),(2,2),(2,3),(3,3)共计十点。
转载请注明原文地址:https://tihaiku.com/zcyy/3971330.html
相关试题推荐
Onanumberline,thedistancebetweenthetwopointswithcoordinates-5and1
[img]ct_gre5image052[/img]Allfacesofthesolidabovearerectangular.Column
[img]ct_4image002[/img]Thefigureaboveshowsarectangularplayareainwhich
[img]ct_gre5image018[/img]Thediagramrepresentsarectangulargarden.Theshad
Thedimensions,incentimeters,ofrectangularboxRare6by8by10.Whichof
Arectangularfloor18feetby10feetistobecompletelycoveredwithcarpetin
Youareapplyingfertilizertoyourbackyard.Therectangularyardmeasures40f
Whatisthesurfaceareaofarightrectangularsolidwithdimensions4by7by
RectanglePQRSliesinthexy-coordinateplanesothatitssidesarenotparalle
[img]ct_gre5image064[/img]Intherectangularcoordinatesystem,segmentOPisr
随机试题
WhatSelectivityMeansforYouUnderstanding
[originaltext]Antshaveanamazingabilitytocommunicatewitheachother
Sometimeago,aninterestingdiscoverywasmadeby【C1】______ontheAegeani
WhichofthefollowingdetailsisNOTtrue?[originaltext]TheRomanCatholic
[originaltext]M:Wouldyoumindtellingmewhatthesalaryis?W:Well,thispo
根据《土地管理法》,基本农田可用于( )。A、建窑 B、挖塘养鱼 C、发展林
工作量的大小和工作消耗的时间长短是工作的()。A.复杂程度 B.饱和程
1997-65.患者颈前正中肿大,发胀,质软不硬,常太息,胸闷,两胁窜痛,苔薄
《中华人民共和国政府采购法》于2004年由第九届全国人民代表大会常务委员会第二十
某架空输电线路,最高气温为40℃,导线采用钢芯铝绞线并按经济电流密度选择导线截面
最新回复
(
0
)