In first part of this thesis some basic concepts are repeated, such as continuity, differentiability and functional series since we must understands those concepts to understand nowhere differentiable functions. In the second part we present some new theorems and concepts, such as Labesgue theorem, functions with bounded variation and Weierstrass function, which is the first example of nowhere differentiable continuous function. In the last part of thesis the van der Waerden-Takagi function with generalized parameters is presented, also with proof that this funciton is nowhere differentiable but continuous everywhere.
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