f(x)=(x+3)⁻¹-1
f(x)=(x+1)⁻¹-3
f(x)=(x+3)⁻¹+1
f(x)=(x-1)⁻¹-3
f(x)=(x-3)⁻¹-1
f(x)=(x+1)⁻¹+3
f(x)=(x-1)⁻¹+3
f(x)=(x-3)⁻¹+1
