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 Let A (a, b) be a fixed point and O be the origin of  coordinates, If A1 is the mid-point of OA, A2 is the mid-point of -.A1, A3 is the mid-point of AA2 and so on. Then the coordinates of A1  are

a
a1−2−n, b1−2−n
b
a2−n−1, b2−n−1
c
a1−2−(n−1), b1−2−(n−1)
d
none of these

detailed solution

Correct option is A

The coordinates of A1 are a2,b2the coordinates of A2 are a+a22,b+b22=a2+a22,b2+b22the coordinates of A3 are a+a2+a222,b+b2+b222=a2+a22+a23,b2+b22+b23Continuing in this manner we observe that the coordinates of A1 area2+a22+a23+……+a2n,b2+b22+b23+….+b2n=a1−12n,b1−12n=a1−2−n,b1−2−n

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