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Relations and Functions — MATHS STD 10 — Question

Tamilnadu BoardEnglish MediumSTD 10MATHSRelations and Functions2 Marks
Question
Find A × B, A × A and B × A :
A = {m, n}; B = Φ
✓

Answer

A = {m, n} × B = Φ
Note: B = Φ or {}
A × B = {m, n} × { }
= { }
A × A = {(m, n) × (m, n)}
= {(m, m) (w, w) (n, m) (n, n)}
B × A = { } × {w, n}
= { }

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