【判断题】【消耗次数:1】
f(x)=x^2,g(x)=√(x^4 );f(x)=g(x)
正确
错误
参考答案:
复制
纠错
相关题目
【判断题】 f(x)=x,g(x)=(√x)^2;f(x)=g(x)
①  正确
②  错误
【判断题】 f(x)=|x|,g(x)=√x^2;f(x)=g(x)
①  正确
②  错误
【判断题】 f(x)=x,g(x)=(√2)^2 ;f(x)=g(x)
①  正确
②  错误
【单选题】 设f :R→R,f(x)=x2-2,g: R→R, g(x)=x+4,则gof为( )
①  满射
②  单射
③  双射
④  x2+2
【判断题】 f(x)=lnx^2,g(x)=2lnx;f(x)=g(x)
①  正确
②  错误
【判断题】 f(x)=1,g(x)=|x|/x;f(x)=g(x)
①  正确
②  错误
【判断题】 f(x)=(x^2-1)/(x-1),g(x)=x+1;f(x)=g(x)
①  正确
②  错误
【多选题】 令 F(x): x 喜欢步行, G( x): x 喜欢骑自行车, H(x): x 喜欢乘汽车,令前提: x(F(x) ? ?G(x)), x(G(x) ú H(y)), $x?H(x),则下面是其有效结论的有:
①  $x?F(x)
②  xG(x)
③  ?xF(x)
④  $xG(x)
【判断题】 设F(x)=G(x),则F(x)-G(x)=0
①  正确
②  错误
【判断题】 设F(x)=G(x),则F(x)+G(x)=0
①  正确
②  错误
随机题目
【单选题】 ___ he does has nothing to do with me.
①  Whatever
②  No matter what
③  That
④  If
【单选题】 When I worked as the general manager of the firm, I sometimes had ___ to visit London on business.
①  opportunity
②  possibility
③  occasion
④  chance
【单选题】 The manager came over and asked the customer how ___.
①  did the quarrel came about
②  the quarrel had come about
③  had the quarrel come about
④  had the quarrel come about
【判断题】 The population of beijing has been increased for ten years.
①  正确
②  错误
【单选题】 ___ I saw the computer, I showed great interest in it.
①  At first
②  For the first time
③  Until
④  The first time
【判断题】 Can you arrive the top of the roof?
①  正确
②  错误
【单选题】 He speaks English ___ he speaks his mother tongue.
①  so good as
②  as good as
③  so well as
④  as well as
【单选题】 My mother is __________ a piece of meat.
①  knife
②  knifing
③  knifes
④  kniked
【单选题】 I often visited Tian’an Men Square ___ I was staying in Beijing.
①  until
②  during
③  while
④  throughout
【单选题】 Try ___ he might, he couldn’t get out of difficulty.
①  when
②  where
③  till
④  as