# CBSE Class 12-science Answered

**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**

Asked by darshansh200 | 28 Jul, 2020, 13:44: PM

Expert Answer

Give: f is a mapping from A×B to B×A such that (a,b)=(b,a)

To check one-one

Answered by Renu Varma | 29 Jul, 2020, 12:20: PM

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