Where are the functions f1(x)=|sin(x)| and f2(x) = sin(|x|) differentiable? Use n as an arbitrary integer constant.)
f1(x) = |sin(x)| is differentiable for all x ≠______________
f2(x) = sin(|x|) is differentiable for all x ≠______________
f1(x) = |sin(x)| is differentiable for all x ≠______________
f2(x) = sin(|x|) is differentiable for all x ≠______________