<span class="searchmatch">differentieerde</span> inflection of differentiëren: singular past indicative (dated or formal) singular past subjunctive...
differentieer <span class="searchmatch">differentieerde</span> 2nd person sing. (jij) differentieert, differentieer2 <span class="searchmatch">differentieerde</span> 2nd person sing. (u) differentieert <span class="searchmatch">differentieerde</span> 2nd person sing...