Найти D(y) y=log2(10-5x)

[latex]y=log_2(10-5x)[/latex] [latex]10-5x\ \textgreater \ 0[/latex] [latex]-5x\ \textgreater \ -10[/latex] [latex]x\ \textless \ 2[/latex] -----------(2)------------- ///////////// [latex]D(y)=(-[/latex] ∞ [latex];2)[/latex]