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polibiserova
@polibiserova
August 2022
1
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КАК РЕШИТЬ ЭТО?
СРОЧНО!!!
ХОТЯ БЫ РЕШЕНИЕ
ПРОШУ!!!
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Answers & Comments
Segrif
R = pq = p(450 - 20p) >= 2520
20p^2 - 450p + 2520 <= 0
2p^2 - 45p + 252 <= 0
D = 45^2 - 4*2*252 =2025 - 2016 = 9
p1,2 = ( 45 +- sqrt(9) )/ 2*2
p1 = 42/4 = 10.5
p2 = 48/4 = 12
Наибольшее p = 12 (тыс. руб.)
2 votes
Thanks 1
polibiserova
Что означает ^?
Segrif
Степень. p^2 - p в квадрате
polibiserova
спасибо
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Answers & Comments
20p^2 - 450p + 2520 <= 0
2p^2 - 45p + 252 <= 0
D = 45^2 - 4*2*252 =2025 - 2016 = 9
p1,2 = ( 45 +- sqrt(9) )/ 2*2
p1 = 42/4 = 10.5
p2 = 48/4 = 12
Наибольшее p = 12 (тыс. руб.)