If sets A and B are defined as A={(x,y):y=ex,x∈R} B={(x,y):y=x,x∈R}, then
A
B⊂A
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B
A⊂B
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C
A∩B=ϕ
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D
A∪B=A
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Solution
The correct option is CA∩B=ϕ A=(x,y) are points on the curve y=ex B=(x,y) are points on the line y=x It can be observed from figure that both the curves have no point of intersection for all x∈R Therefore, A∩B=ϕ Hence, option 'C' is correct.