Автор - kazbeki

log0.4x+log0.4(x-1)>log0.4(x+3)

Ответ

Автор - 777sanyapro100

Ответ:

(1;3)

Объяснение:

log0,4x+log0,4(x-1)>log0,4(x+3)

log0,4(x(x-1))>log0,5(x+3)

x^2 - x < x + 3

x^2 - 2x -3 < 0

x € (-1;3)

x-1>0 => x>1

x € (1;3)

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