Recent content by Tahoe

Hello! Don´t want to bother but does anybody has an idea how to proceed with the given problem? It makes me crazy not solving it right now. Thank you for any help.

Hello! I got the following function: \int_{0}^{x} \left(-1 \right)^{\lfloor 2^{i} \cdot t \rfloor} \ dt, \quad x \in \left[0,1 \right] I want to show it is not differentiable at x= 2^{-i} k where k is a natural number greater equal 0. I already calculated the right derivate by...