nd more negative-real for increasing values of</span></span><span class = "S2"><span class="S0"> </span></span><span style="font-family:STIXGeneral, STIXGeneral-webfont, serif; font-style: italic; font-weight: normal">&#1013;</span><span class = "S2"><span class="S0">.</span></span></div><div class = 'CodeBlock contiguous'><div class = 'inlineWrapper'><div class = "S4 lineNode"><span class = "S5"><span class="S0">[x,Dx,Dxx] = diffper(40,[0,1]);</span></span></div></div><div class = 'inlineWrapper'><div clas