Question

При каких значениях аргумента: 1) значение f(x)==3 2) значение g(x)= +2 =11 3) значение f(x)= + =1

Answer 1

$1) x+5 = 9/3 =\ \textgreater \ x = 9/3 - 5 = -2$
$2) (7x+1) / 4 = 9 =\ \textgreater \ 7x+1=36 =\ \textgreater \ 7x = 35 =\ \textgreater \ x = 5$
$3) 5/(x+3) = 1/3 =\ \textgreater \ x+3 = 5 : 1/3 =\ \textgreater \ x+3 = 15 =\ \textgreater \ x = 12$