[理工] Gamma Function
Ex: for all nonnegative integer n evaluate ∫x^n.exp(-1/2.x^2)dx
積分範圍是-∞ ~ +∞
請問有什麼方法可以把範圍變到0~+∞之間嗎?
我朋友他筆記上的解答抄的有點亂
我看不太懂= =
所以才跑來這麻煩各位大大T_T
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