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</o:shapelayout></xml><![endif]--></head><body lang=FR link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'>Hello,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'>The operator ^ seems to return the real part of one of the complex roots of x^3=1. <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#26282A'>If x=[-10:1:10]<br>and<br>y = x^(1/3);<br></span><span lang=EN-US style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'>Thus, for x<0, the values of y are half the opposite of values obtained with x>0.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'>With y=x.^(1/3), the values of y are complex for x<0.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'>HTH<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'>Denis <o:p></o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>De :</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> users [mailto:users-bounces@lists.scilab.org] <b>De la part de</b> Hector R. Lepez<br><b>Envoyé :</b> vendredi 9 mars 2018 11:58<br><b>À :</b> users@lists.scilab.org<br><b>Objet :</b> [Scilab-users] Help me plot y = x^(1/3);<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><div id="ydp6362763cyahoo_quoted_0760238045"><div><p class=MsoNormal><span lang=EN style='font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#26282A'>I have problems to graph the function</span><span style='font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#26282A'><o:p></o:p></span></p><div><div id=ydp6362763cyiv8880741167><div><div><div><div><pre><span lang=EN style='color:#26282A'><br>x=[-10:1:10]<br><br>y = x^(1/3);<br><br>plot(x,y);<br><br>the same in plot of google gives a graph but scilab does anything with the sign.</span><span style='color:#26282A'><o:p></o:p></span></pre></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#26282A'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#26282A'>Héctor Lépez<o:p></o:p></span></p></div></div></div></div></div></div></div></div></div></div></body></html>