If A={1,2,3,4,5}, then find the domain in the relation from A→A by R={(x,y):y=2x-1}.
{1,2,3}
{1,2}
{1,3,5}
{2,4}
Explanation for the correct option:
Finding domain
Given,y=2x-1
At, x=1,
Then, y=1
At x=2,
Then, y=3
At, x=3,
Then, y=5
When A→A
{1,2,3,4,5,}→{1,2,3,4,5}
And the order pairs are (1,1),(2,3),(3,5)
The coordinates of ‘x’ are {1,2,3} is the domain.
Hence, the correct option is (A).
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