List the members of the equivalence relation defined by `{{1,2,3},{4}}` partitins on X={1,2,3,4}.Also find the equivalence classes of 1,2,3 and 4.

Explanation

The equivalence relation is `R={(1,1),(2,2),(3,3),(4,4),(1,2),(1,3),(2,1),(2,3),(3,1)(3,2)}`
`[1]=[2]=[3]={1,2,3} `
` [4]={4}`