0} \atop {4-x \leq ( \frac{1}{3} )^0}} \right.
\\\
\left \{ {{x<4 \atop {4-x \leq 1}} \right.
\\\
\left \{ {{x<4 \atop {x \geq 3}} \right.
\\\
x\in[3;4)" alt="log_ \frac{1}{3} (4-x) \geq 0
\\\
\left \{ {{4-x>0} \atop {4-x \leq ( \frac{1}{3} )^0}} \right.
\\\
\left \{ {{x<4 \atop {4-x \leq 1}} \right.
\\\
\left \{ {{x<4 \atop {x \geq 3}} \right.
\\\
x\in[3;4)" align="absmiddle" class="latex-formula">
Ответ: 3≤х<4</u>