0" alt="lg(2x)-lgx>0" align="absmiddle" class="latex-formula">
0; 2x>0; " alt="x>0; 2x>0; " align="absmiddle" class="latex-formula">
0" alt="x>0" align="absmiddle" class="latex-formula">
0" alt="lg2+lg x-lg x>0" align="absmiddle" class="latex-formula">
0" alt="lg2>0" align="absmiddle" class="latex-formula">
lg 10" alt="lg 2>lg 10" align="absmiddle" class="latex-formula">
1; 2>10" alt="10>1; 2>10" align="absmiddle" class="latex-formula">
не выполняется
х є
