help please find all points where the function is not differentiable

we have the function
[tex]F(x)=\sqrt[3]{x-1.1}+3[/tex]the domain of the given function is all real numbers
Find out the first derivative
[tex]F^{\prime}(x)=\frac{0.33}{(x-1.1)^{(\frac{2}{3})}}[/tex]at x=1.1 the derivative is undefined
therefore