CUET Preparation Today
CUET
-- Mathematics - Section B1
Relations and Functions
Let A = {(x, y) | y = ex, x ∈ R} and B = {(x, y) : y= e-x, x ∈ R}. Then
A ∩ B = $\phi$
A ∩ B ≠ $\phi$
A ∪ B = R2
none of these
y = ex and y = e–x will intersect at one point
Hence (2) is the correct answer.