The region of argand diagram defined by `|z-1|+|z+1| – InterviewSolution

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1.	The region of argand diagram defined by `\|z-1\|+\|z+1\|
Answer» `\|z-1\|+\|z+1\| le 4` shows that distance of `z` from a point `(-1,1)` is constant that is less than or equal to `4`. So, this is the case of ellipse as in case of ellipse distance of a point from two focii is always constant. As constant value is `4` or less than `4`, it will include the region interior of the ellipse also. So, option `(3)` is the correct option.

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