Email
logo

Ask Questions, Get Answers

X
 
Questions  >>  CBSE XII  >>  Math  >>  Relations and Functions
Answer
Comment
Share
Q)

In the event that $\ast$ is not a binary operation, give justification for this: On $Z^+,$ defined $\;\ast\;by\;a\;\ast\;b=|a-b|.$

Note: This is part 4 of a 5 part question, split as 5 separate questions here.

1 Answer

Comment
A)
Toolbox:
  • A binary operation $∗$ on a set $A$ is a function $∗$ from $A \times A$ to $ A$. Therefore, if $a,b \in A \Rightarrow a*b \in A\; \forall\; a,b, \in A$
Given $Z^+$ define $*$ by $a*b=|a-b|$
For each pair of element $a,b \in R$, then exists an unique element $|a-b| \in Z^+$
Therefore $*$ on defined (a,b) defined by $a*b=|a-b| $ carries a unique value in $z+$ and is a binary operation.
Help Clay6 to be free
Clay6 needs your help to survive. We have roughly 7 lakh students visiting us monthly. We want to keep our services free and improve with prompt help and advanced solutions by adding more teachers and infrastructure.

A small donation from you will help us reach that goal faster. Talk to your parents, teachers and school and spread the word about clay6. You can pay online or send a cheque.

Thanks for your support.
Continue
Please choose your payment mode to continue
Home Ask Homework Questions
Your payment for is successful.
Continue
...