Question

( begin{aligned} f(x) &=frac{1}{sqrt{|x|-x}} (|x|-x) mid>0 &|x|-x eq 0 & .|x| eq x therefore quad x in(-infty, 0) & quad text { If } f(x>0) text { this is satisfying } end{aligned} )

# 3.Write the domain of the real function

Solution