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Math Prize For Girls Problems
2019 Math Prize for Girls Problems
5
5
Part of
2019 Math Prize for Girls Problems
Problems
(1)
Math Prize 2019 Problem 5
Source:
10/15/2019
Two ants sit at the vertex of the parabola
y
=
x
2
y = x^2
y
=
x
2
. One starts walking northeast (i.e., upward along the line
y
=
x
y = x
y
=
x
and the other starts walking northwest (i.e., upward along the line
y
=
ā
x
y = -x
y
=
ā
x
). Each time they reach the parabola again, they swap directions and continue walking. Both ants walk at the same speed. When the ants meet for the eleventh time (including the time at the origin), their paths will enclose 10 squares. What is the total area of these squares?
Math Prize for Girls