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CBSE Class 12 Math 2019 All India Set 1 Solved Paper

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Question : 13
Total: 29
Show that the relation R on the set Z of all integers, given by R={(a,b):2 divides (a−b)} is an equivalence relation.
OR
If f(x)=‌
4x+3
6x−4
,x≠‌
2
3
, show that f∘f(x)=x for all x≠‌
2
3
. Also, find the inverse of f.
Solution:  
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