<span class="searchmatch">differensekvationers</span> indefinite genitive plural of differensekvation...
<span class="searchmatch">differensekvationer</span> indefinite plural of differensekvation...
differensekvationen differensekvationens plural indefinite <span class="searchmatch">differensekvationer</span> <span class="searchmatch">differensekvationers</span> definite differensekvationerna differensekvationernas...