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Question

If sets A and B are defined as A={(x,y):y=ex,xR}
B={(x,y):y=x,xR}, then

A
BA
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B
AB
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C
AB=ϕ
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D
AB=A
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Solution

The correct option is C AB=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 xR
Therefore, AB=ϕ
Hence, option 'C' is correct.

56176_2183_ans.jpg

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