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bio website stackoverflow.com/users/…
location Beijing, China
age 25
visits member for 2 years, 8 months
seen 15 hours ago

I have discovered a truly marvelous demonstration of myself that this margin is too narrow to contain.

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Jul
20
revised How to convert a system of parametric equations to a normal equation?
deleted 9 characters in body
Jul
20
revised How to convert a system of parametric equations to a normal equation?
deleted 9 characters in body