.
1. ( I . 3.9).
2. () ( II).
3. () ( III).
4. ( IV).
1 4.
() , P (Q), MR , .
: MRP = MCL.
R = P (Q) * Q,
MRP = (P + P / Q*Q) MPL = P (1+ P / Q * Q / P) MPL = (1 + 1 / h) MPL,
h .
(1 + 1 / h) MPL = MCL = W.
. 3.9.
h < 0, > 0, W > 0, MPL > 0, D L = MRP = MPL * MR , DL = MRP = MPL * P.
. 3.10, D L , DL . - , . L , L 0 , .
. , .
: MRP = MSL.
R = P (Q)* Q.
C (L) = W (L) L.
MRP = (P + P / Q * Q) MPL = P (1+ P / Q * Q / P) MPL = P (1 + 1 / h) MPL
MCL = C/ L = W + L * W / L = W (1 + L / W * W / L) = W (1 + 1 / e S)
P (1 + 1 / h) MPL = W (1 + 1 / e S), MRP = MCL.
( h = -¥, e S = +¥, P * MPL = W, .)
. 3.11 (MRP = MCL), L *, , (L 0). (L ), (LM). W * SL L *. (W 0), (W ), (WM).
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