n-US">entry: the </SPAN></FONT><FONT SIZE=4 STYLE="font-size: 16pt"><SPAN LANG="en-US"><B>independent </B></SPAN></FONT><FONT SIZE=4 STYLE="font-size: 16pt"><SPAN LANG="en-US">variable; the initial value </SPAN></FONT><FONT SIZE=4 STYLE="font-size: 16pt"><SPAN LANG="en-US"><I>x0</I></SPAN></FONT>
<FONT SIZE=4 STYLE="font-size: 16pt"><SPAN STYLE="text-decoration: none"><SPAN LANG="en-US"><I><B>xend</B></I></SPAN></SPAN><SPAN STYLE="text-decoration: none"><SPAN LANG="en-US">: Double</SPAN></SPAN></FONT>
     