青春猛回頭 2011-10-31 誰說資優生無所不能? 他們也會有罩門!

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Tipster Rednimer
  • Bjbl

    sin(alph+beta)明明就等于sin(alpha)cos(beta) + cos (alpha) sin(beta), 不是相乘。。。

  • Gensis

    the math question on the sweets: is 21 right?

  • Bjbl

    that question about sweet is a bit odd,5/3=1.3333 suggest that there is no sufficient paper to get 2 sweets, as if you use the remaining 5 papers to get sweet, you can only get 1. so it should be 15+5+1=21.

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