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НоВыЙ13
@НоВыЙ13
July 2022
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Найди наибольшее и наименьшее значение функции [tex]y=2x^3-6x+5[/tex] на отрезке [tex][- \frac{5}{2} ; \frac{3}{2} ][/tex]
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Кулшат
Y' =6x² - 6 =0; x²=-+1 ∉[- 5/2; 3/2];
y(- 1) = 9; max y(1) = 1 ;
y(- 5/2) = -31.25 + 20 = -11.25; min
y(3/2) = 6.75 - 4 = 2.75;
2 votes
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НоВыЙ13
значит наибольшее будет 2.75 ?
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Answers & Comments
y(- 1) = 9; max y(1) = 1 ;
y(- 5/2) = -31.25 + 20 = -11.25; min
y(3/2) = 6.75 - 4 = 2.75;