Please Solve RD Sharma Class 12 Chapter Function Exercise 2.4 Question 5 Maths Textbook Solution.
Answer:
Given:
, defined by
Hint:
Solution:
Injectivity of :
Let and
be two elements of the domain
, such that,
So, is one-one.
Subjectivity of
Let be n the codomain
,
.
is onto.
So, is bijection.
Let …(i)
[From (i)]