In general, (a, b) ∈ R, we do not bother whether there is a recognisable
connection or link between a and b As seen in Class XI, functions are special kind of
relations In this chapter, we will study different types of relations and functions, composition
of functions, invertible functions and binary operations Chapter 1
RELATIONS AND FUNCTIONS
Lejeune Dirichlet
 (1805-1859)
Rationalised 2023-24
MATHEMATICS
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