Question

Только 5 задание.......

Answer 1

$f(x)=-\frac{4}{x}\\\\-f(x+1)=-(-\frac{4}{x+1})=\frac{4}{x+1}\\\\\frac{4}{x+1}=4\; \; ,\; \; ODZ:\; x\ne -1\\\\4=4(x+1)\\\\x+1=1\\\\x=0$