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 Enlightened First to answer and accepted with score of 10 or more. This badge can be awarded multiple times.

Artes earned this badge 24 times

may 1 at 12:14
Map a 3D plot into plane
dec 27 at 10:11
How do I expand a sum?
may 21 '12 at 22:45
How to find the smallest root
may 8 '12 at 6:05
Combining lists

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