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Question

If A={(x,y):y=e-x}andB={(x,y):y=-x}. Then..


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Solution

If A={(x,y):y=e-x}&B={(x,y):y=-x}. Then:

Given A={(x,y):y=e-x}&B={(x,y):y=-x}

Set Aelement =Set Belement

e-x=-x1/ex=-xe-x≠-1/x

Since the values of elies in between 2<e<3 for any value of x

So A∩B=∅

Hence, A∩B=∅


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