CBSE Class 12science  Problems on Functions Videos
Revision on types of functions and related problem solving
Revisit types of functions and solve problems based on them.

l didn't get the 2nd step, if we open the first step it becomes vast so how we got the second step as a simplified version.
 A thief steals a 100 Rs note from a shop and buys goods worth 70 Rs from the same shop with the same 100 Rs note and the shopkeeper returns him 30 Rs., how much Rs does the shopkeeper lose?
 Prove that the function f:RR,given by f(x)=2x,is oneone and onto

find the domain of the following

confuse
 Let A and B be non empty sets and f is a mapping from A×B to B×A such that (a,b)=(b,a), then 'f' is

Check surjectivity. Plzz

2018, 25, Maths,find the set of elements.
 show that the relation R on R defined as R={(a,b):a<_b } is reflexive, transitive but not symmetric Chapter: Relations and functions
 et f R> R be defined by f(x) = 3x 4, then find f^1(x