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Old February 1st, 2011 (4:46 PM).
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Cherrim Cherrim is offline
the blossom pokémon
  • Platinum Tier
Join Date: Dec 2002
Location: Waterloo, ON
Age: 28
Gender: Female
Nature: Relaxed
Posts: 30,838
*pats* My high school curriculum didn't introduce derivatives until the second half of the grade 12 calculus/functions course so it's not weird if you haven't seen it before. :3