Розрахунок: Pldz2B - 1
P_n* (k) =
C(k;n)* p^k* q^(n-k)
C(k;n)* p^k* q^(n-k)
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P_n* (k) = C(k;n)* p^k* q^(n-k)$$P_{n}\cdot (k)$$ = $$C_{n}^{k}\cdot p^{k}\cdot q^{(n-k)}$$
P_n* k =
$$P_{n}\cdot k$$ = $$\frac{n!\cdot p^{k}\cdot q^{(n-k)}}{(n-k)!\cdot k!}$$
| n!* p^k* q^(n-k) |
| / (n-k)!/ k! |
P_n =
$$P_{n}$$ = $$\frac{n!\cdot p^{k}\cdot q^{(n-k)}}{(n-k)!\cdot k!\cdot k}$$
| n!* p^k* q^(n-k) |
| / (n-k)!/ k!/ k |
P_n =
$$P_{n}$$ = $$\frac{n!\cdot p^{k}\cdot q^{(n-k)}}{(n-k)!\cdot k\cdot k!}$$
| n!* p^k* q^(n-k) |
| / (n-k)!/ k/ k! |