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If the point (a ,a) is placed in between...

If the point `(a ,a)` is placed in between the lines `|x+y|=4,` then find the values of `adot`

Text Solution

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We have lines x+y-4=0 and x+y+4=0
Point (a,a) lies on the line y=x.

Line y=x intersects the given lines at A(2,2) and B(-2,-2).
So, if (a,a) lies on the line y=x between point A and B, we must have `-2 lt a lt 2.`
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