Предмет: Математика, автор: Marmarine

Решите пожалуйста

В первом уравнении после (3х)=1​

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Ответы

Автор ответа: bassygarabahtiar
1

Ответ:

1). (log3(9x*3x))^2=(log3(27))^2=3^2=9

(log3(x))^2-3log3(x)-2>0

log3(x)=t

t^2-3t-2>0

t^2-3t-2=0

D=9-4*1*(-2)=17

t1/2=(3(+/-)sqrt(17))/2

log3(x)=3(+/-)sqrt(17))/2

x1-рисунок1

х2-рисунок 2

Приложения:
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