Question

Найдите область определения функции: f(x)=log0,1(0,01-x^2)

Answer 1

$0,01-x^2\ \textgreater \ 0 \to x^2-0,01\ \textless \ 0 \ \textless \ =\ \textgreater \ (x-0,1)(x+0,1)\ \textless \ 0\\\\ZNAKI:+++(-0,1)---(0,1)+++\\\\OTBET:x\in(-0,1;0,1)$