[問題] 柯西求期望值上下界問題？
請問下半段解答為何分段積分第一段下界變成無限大、上界1？下界無限大也感覺怪怪的，負的比較合理吧？懇請釋疑，thanks
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10/09 18:15, , 1F
10/09 18:15, 1F
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10/10 13:53, , 2F
10/10 13:53, 2F
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10/10 18:05, , 3F
10/10 18:05, 3F
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10/10 21:35, , 4F
10/10 21:35, 4F
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10/10 21:35, , 5F
10/10 21:35, 5F
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10/10 21:36, , 6F
10/10 21:36, 6F
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10/12 15:21, , 7F
10/12 15:21, 7F
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10/12 15:22, , 8F
10/12 15:22, 8F