首页
登录
职称英语
For all real numbers v, the operation v* is defined by the equation v* = v-(v/3)
For all real numbers v, the operation v* is defined by the equation v* = v-(v/3)
游客
2024-01-12
56
管理
问题
For all real numbers v, the operation v* is defined by the equation v* = v-(v/3). If (v*)*=8, then v=?
选项
A、15
B、18
C、21
D、24
E、27
答案
B
解析
对于所有实数(real number)v,运算(operation)v*被定义为方程v*=v-v/3,若(v*)*=8,那么v等于多少?
本题的正确答案是B。由题意可得:v*=v-v/3=2v/3→(v*)*=2/3×2/3×v=4v/9=8 → v=18
转载请注明原文地址:http://tihaiku.com/zcyy/3356708.html
相关试题推荐
Bigdatacanbedefinedasinformationthatistoobigorcomplextobe
Bigdatacanbedefinedasinformationthatistoobigorcomplextobe
Bigdatacanbedefinedasinformationthatistoobigorcomplextobe
Bigdatacanbedefinedasinformationthatistoobigorcomplextobe
Iffandgaredistinctprimenumberslessthan10,whichofthefollowingcanno
Thesumofthenon-primenumbersbetween40and50,non-inclusive,isA、131B、176
Whichofthefollowingcouldbetheequationoflinelinthefigureabove?[img]
Forany3givennumbers,whichofthefollowingisalwaysequivalenttoaddingt
Thenumbers3,10,17,24,31and38arethefirstsixtermsofaninfinitesequ
Eachof5positivewholenumbersisatleast8.Theaverage(arithmeticmean)oft
随机试题
Describeaspecialeventinyourlife.Youshouldsay:whattheeventwaswhena
Oncetheydecidedtohavechildren,MiShelandCarlMeissnertackledthenex
A、TheyhiredTomtotakecareoftheirhouse.B、Theylefttheirhouseempty.C、T
[originaltext]W:Iwasworkingonapaperaboutthedifferencesbetweenwomena
Whatcausesmentopursuetopmanagement?Psychologistsoncebelievedthatt
A.6 B.4 C.2 D.0
A.国药证字H(Z、S)+4位年号+4位顺序号B.H(Z、S)C+4位年号+4位
基础心理学是研究()。 (A)正常成人心理现象的心理学基础学科 (B
男,46岁。建筑工人,半小时前从高处坠落,腰背疼痛,急诊查体:T38.9℃,双
最新回复
(
0
)