全美最恐怖鬼屋，顧客參加必須先簽生死狀！猶如身歷其境奪魂鋸現場．． 


近日美國新開幕的鬼屋「17th Door」，深獲許多恐怖愛好者的喜愛！

這鬼屋被認為可能是世界上最恐怖的鬼屋，遊客入屋前要先簽免責聲明！

開幕至今，已有數百名遊客入場，其中四分之一的人被嚇到中途大喊「饒命（mercy）」要提前離場。


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A curious connection : What's the function $f(x)$?

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Issue with $int_0^inftyfraccos(x^2)x^2dx$

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Equality of field extensions given Splitting field is $S_n$.

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