Redirected
edited by
475 views
0 votes
0 votes

Let $A=\{x|-1< x<1\}=B.$ The function $f(x)=\dfrac{x}{2}$ from $A$ to $B$ is:

  1. injective
  2. surjective
  3. both injective and surjective
  4. neither injective nor surjective
edited by

1 Answer

1 votes
1 votes
y=x/2  // monotonic increasing =>one-one certainly....

linear polynomials are always one-one

 

domain and range ∈ (-1,1) but here co domain ∈ (-1/2 ,1/2) so some elements won't be connected to any x..

so it's not an onto function...

Related questions

0 votes
0 votes
1 answer
1
go_editor asked Mar 27, 2020
4,578 views
Which statement is wrong If linked origin $\neq$ translated origin, relocation must be performed by the linkerIf load $\neq$ linked origin, the loader must perform reloca...
0 votes
0 votes
0 answers
2
go_editor asked Mar 27, 2020
737 views
Tasks done in parsing are:Check the validity of a source stringDetermine the syntactic structure of a source stringBoth A and BNone of these
0 votes
0 votes
1 answer
3
go_editor asked Mar 27, 2020
344 views
$\text{YACC}$ builds up _____parsing table.$\text{LALR}$$\text{LR}$$\text{SLR}$$\text{LLR}$
2 votes
2 votes
1 answer
4
go_editor asked Mar 27, 2020
1,155 views
The action of passing the source program into the proper syntactic class is known as:Syntax analysisLexical analysisInterpretation analysisUniform symbol generation