найдите точку максимума функции y=ln(x+9)-2x+13. Created by lenkase. algebra-ru

найдите точку максимума функции y=ln(x+9)-2x+13...

lenkase @lenkase

July 2022 1 34 Report

найдите точку максимума функции y=ln(x+9)-2x+13

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mionkaf1

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$y=ln(x+9)-2x+13,x>-9\\y'=\frac{1}{x+9}-2\\\\y'=0\\\\\frac{1}{x+9}-2=0,x\neq -9\\\\\frac{1}{x+9}=2\\\\1=2(x+9)\\\\x=-\frac{17}{2}\\\\\ \ [-9]+++++[-\frac{17}{2}]-----\\\\x_{max}=-8,5$

*С плюса на минус - МАКСИМУМ.

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lenkase October 2021 | 0 Ответы

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