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14 lines
663 B
Plaintext
14 lines
663 B
Plaintext
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n n! n-i i
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t B (t)= t ──────── (1-t) t
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i (n-i)!i!
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i+1 (n+1)! (n+1)-(i+1) i+1
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= ─── ──────────────────── (1-t) t
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n+1 ((n+1)-(i+1))!(i+1)!
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i+1 k! k-(i+1) i+1
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= ─── ──────────────── (1-t) t , where k = n + 1
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k (k-(i+1))!(i+1)!
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i+1 k
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= ─── B (t)
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k i+1
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