<div class="definition">Une fonction  \(f : [a,b] \to \RR^2 ) est dite <span class="defn">uniformment continue </span>
si <center>\( \forall \varepsilon>0 , \exists \delta> 0 , |t-t'| < \delta \Rightarrow)\( || f(t)-f(t')||\leq \varepsilon )</center>
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