If A = {(x, y) : y = ex, x
R} and B = {(x, y) : y = e−x, xR}, then write 
.
Here, 
and
A⋂B={(x,y):y=ex ,xϵR} and {(x,y):y=e-x ,xϵR}
={(x,y):y= ex and y= e-x xϵR}
={(x,y): ex = e-x xϵR}
={(x,y):e2x =1,xϵR}
={(0,1)} (∵ 
)
1
If A = {(x, y) : y = ex, xR} and B = {(x, y) : y = e−x, xR}, then write .
Here, and
A⋂B={(x,y):y=ex ,xϵR} and {(x,y):y=e-x ,xϵR}
={(x,y):y= ex and y= e-x xϵR}
={(x,y): ex = e-x xϵR}
={(x,y):e2x =1,xϵR}
={(0,1)} (∵ )