函数间断点怎么求

在数轴上与原点距离为4的点有多少个,这些点表示的数是?,他们的关系是? 已知数轴上有A.B两点,AB两点之间的距离为1,点A与原点O的距离为3,求所有满足条件的点B与原点O的距离之和 数轴上有AB两点,AB之间的距离为1,A与原点O的距离为3,求所有满足条件的点B与原点的距离的和 已知数轴上有A,B两点,点A,B间的距离为1,点A与原点O的距离为3,求所有满足条件的点B与原点O的距离之和求画数轴. 映射的概念理解对于集合A来说,-------------这些元素称为-------对于集合B来说---------------这些元素称为------- I cannot predict the future. 集合映射问题,能理解的就是高手一：从集合A={1,2,3}到集合B={3,4}的映射f中满足条件f（3）=3的映射个数是 二：设集合A=[1,2},则从A到A的映射f中满足f[f（x）]=f（x）的映射个数是关键在于讲清楚 Lin Hai has the same coat as Li Lei这句话有错吗?老师说句末省略了has,完整的句子应为Lin Hai has the same coat as Li Lei has.我就纳闷了,has怎能指代has the same coat呢?我认为应该是：Lin Hai has the same coat as Li Le 不痴不聋,不做阿家翁.请问出自哪里? 丑妇终需见家翁,它出自那里,故事来由系点样, 不痴不聋,未堪作大家翁古文翻译 MISS day 什么意思啊 I managed to obtain a ticket for the opera,but ____ at the back of the theatre,I could neither see nor hear clearly.A.seatedB.satC.seatingD.sit 我认为she is managed to have the work done in quite another way应该没有is才对she managed to have the work done in quite another way不知道为什么要加is there is some（）and potatoes in the fridge.A.beef b.bread c.eggs d.tomato 选几?why? 怎么不能在C语言中直接写1 They made the rivers dirty and lots of fish died.为什么fish后die用过去式,不能想成made fish +do? 尔翁知我的尔是什么意思? She saus that she'll___(住在一个太空站）in the future.还有：We tired ______(使)the old man_____（感到快乐） S=0； for X=1:5 S=S+X； end disp（S）请问若其中S=S+X；中的分号不写会怎么样啊? who would like to run in the race tomorrow?的中文意思 S←0 For I from 1 to 11 step 2 S←2S+3 If S>20 then S←S-20 End If End For Print SFor I from 1 to 11 step 2此题目这句话 有用么 跟I 有关系么?还有希望 自己做 soso问问的最佳答案 不对或许 Where would you like us to run the cable? I clean my room once a week.Not too_______A.Much B.Many C.Often D.Lot coffee is the__of this district and brings local farmers a lot of money.spicemajoritystapleelite 请问选哪个 请详解 In Nanjing,we stayed at a very nice hotel.But I cat't remember ___ name of it.A.the B.a C.an D./ a level是什么 我这样的a level成绩最好能进英国的哪些大学读psychology,我之前重读了一年As,但是数学两年的已经读完了是A*,但我的GCSE ENGLISH目前只有C（因为签证的问题IELTS反而不需要）.我想问一下牛津剑桥 类型定义enumDIR{Left,Right,Up,Down}dir；表示自定义类型的是什么? he was falling very slowly .因为这里强调动作,因此用adv slowly 不用adj slow obstacle and barrier他们有什么区别? difficult \ sounds\ and \ mant \ boring\连词成句