📄 数值计算方法c例子.htm
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<font color=#FFFFFF>tB7</font><br>int i=0; <font color=#FFFFFF>vwO</font><br>fx1=x1*x1*x1-x1-1; <font color=#FFFFFF>D)/</font><br>fx2=x2*x2*x2-x2-1; <font color=#FFFFFF>~ti></font><br>while(fabs(x2-x1)>=1e-3) <font color=#FFFFFF>/</font><br>{x0=(x1+x2)/2; <font color=#FFFFFF>dgyj</font><br>fx0=x0*x0*x0-x0-1; <font color=#FFFFFF>[sJ`</font><br>i++; <font color=#FFFFFF>*</font><br>if((fx0*fx1)<0) <font color=#FFFFFF>lKIqJ</font><br>{x2=x0; <font color=#FFFFFF>t*\keD</font><br>fx2=fx0; <font color=#FFFFFF>!s`(</font><br>} <font color=#FFFFFF>©BlueLi论坛 -- BlueLi论坛 ne-P%_</font><br>else <font color=#FFFFFF>©BlueLi论坛 -- BlueLi论坛 /#G:)d</font><br>{x1=x0; <font color=#FFFFFF>e</font><br>fx1=fx0;} <font color=#FFFFFF>bW#W~m</font><br>printf("\n x=%4.3f",x0); <font color=#FFFFFF>R</font><br>printf(" i=%d",i-1); <font color=#FFFFFF>"qL</font><br>} <font color=#FFFFFF>©BlueLi论坛 -- BlueLi论坛 c</font><br>getch(); <font color=#FFFFFF>O?25c_</font><br>} <font color=#FFFFFF>©BlueLi论坛 -- BlueLi论坛 sy-J$</font><br>调试运行： <font color=#FFFFFF>&k4_</font><br>x=1.500 i=0 <font color=#FFFFFF>AbXSx3</font><br>x=1.250 i=1 <font color=#FFFFFF>c2</font><br>x=1.375 i=2 <font color=#FFFFFF>j=#D</font><br>x=1.312 i=3 <font color=#FFFFFF>vOUhg,</font><br>x=1.344 i=4 <font color=#FFFFFF>Z</font><br>x=1.328 i=5 <font color=#FFFFFF>iP/B</font><br>x=1.320 i=6 <font color=#FFFFFF>n=o?</font><br>x=1.324 i=7 <font color=#FFFFFF>+</font><br>x=1.326 i=8 <font color=#FFFFFF>Y^</font><br>x=1.325 i=9 <font color=#FFFFFF>f8t</font><br><font color=#FFFFFF>©BlueLi论坛 -- BlueLi论坛 3Y&CcL</font><br> <font color=#FFFFFF>©BlueLi论坛 -- BlueLi论坛 Zf|ppH</font><br><marquee width=90% behavior=alternate scrollamount=3><font color=#DC143C>二分法.c</font></marquee><font color=#FFFFFF>@(8kkD</font><br><marquee width=90% behavior=alternate scrollamount=3><font color=#DC143C> . <font color=#FFFFFF> +q.g#</font><br> |<font color=#FFFFFF>f</font><br> \ * ./<font color=#FFFFFF>x:S-|c</font><br> . * * * .<font color=#FFFFFF>3:gJ!</font><br> -=* POP! *=- <font color=#FFFFFF>A cE)j</font><br> . .* * * .<font color=#FFFFFF> Ku</font><br> / * .\<font color=#FFFFFF>f</font><br> | <font color=#FFFFFF>r</font><br></font></marquee> . <font color=#FFFFFF>Q</font><br><font color=#FFFFFF>©BlueLi论坛 -- BlueLi论坛 o"0w</font><br><font color=#FFFFFF>©BlueLi论坛 -- BlueLi论坛 .n*%</font><br><font color=#FFFFFF>©BlueLi论坛 -- BlueLi论坛 ^</font><br><font color=#FFFFFF>©BlueLi论坛 -- BlueLi论坛 (q</font><br><marquee width=90% behavior=alternate scrollamount=3><font color=#DC143C>迭代.c</font></marquee><font color=#FFFFFF>o<3]J</font><br>取迭代公式：x(n+1)=(x(n)+0.2)^0.2,在[1，2]区间收敛，取X*=1.5 <font color=#FFFFFF>V!.</font><br>#include <math.h> <font color=#FFFFFF>_+Q:{x</font><br>main() <font color=#FFFFFF>!u0Bxx</font><br>{double x0=1.5,x1; <font color=#FFFFFF>aHq<G;</font><br>x1=pow(x0+0.2,0.2); <font color=#FFFFFF>Q(:i8y</font><br><font color=#FFFFFF>©BlueLi论坛 -- BlueLi论坛 h!*P!V</font><br>while(fabs(x0-x1)>=1e-5) <font color=#FFFFFF>egif</font><br>{x0=x1; <font color=#FFFFFF>"_</font><br>x1=pow(x0+0.2,0.2); <font color=#FFFFFF>aUL[\</font><br>} <font color=#FFFFFF>©BlueLi论坛 -- BlueLi论坛 ZU)</font><br>printf("\n x=%6.5f",x1); <font color=#FFFFFF>+</font><br>getch(); <font color=#FFFFFF>m'RueN</font><br>} <font color=#FFFFFF>©BlueLi论坛 -- BlueLi论坛 feVuy</font><br> <font color=#FFFFFF>©BlueLi论坛 -- BlueLi论坛 2u4</font><br>调试运行： <font color=#FFFFFF>RI</font><br>X=1.04476 <font color=#FFFFFF>u}</font><br><font color=#FFFFFF>©BlueLi论坛 -- BlueLi论坛 B</font><br><marquee width=90% behavior=alternate scrollamount=3><font color=#DC143C>迭代.c</font></marquee><font color=#FFFFFF>-3z_~&</font><br><marquee width=90% behavior=alternate scrollamount=3><font color=#DC143C><font color=#FFFFFF>"y1C!</font><br><font color=#FFFFFF>©BlueLi论坛 -- BlueLi论坛 T</font><br> ue$$$$$$$$$e. <font color=#FFFFFF>af#'v</font><br> o$$$P"" "#$$$b <font color=#FFFFFF>6jHmj`</font><br> d$$$" ?$$N <font color=#FFFFFF>sA1#</font><br> x$$$" $$$ <font color=#FFFFFF>Na+9</font><br> d$$$ .ueeeeeeeeee$$$beeeeeu <font color=#FFFFFF>Sq)</font><br> @$$$ d$ $> $$ <font color=#FFFFFF>{C</font><br> $$$$ $$ $> 4$ <font color=#FFFFFF>Na%sn</font><br>$$$. .$$$P $$ $> 4$ <font color=#FFFFFF>`[[R,</font><br>?$$$L z$$$" $$eeeeeeeeeeee$beeeeeed$ <font color=#FFFFFF>B$},Z</font><br> *$$$e.. .z$$$$" $$ 4$ <font color=#FFFFFF>Ko'V</font><br> ^#R$$$$$$$*" $$ 4$ <font color=#FFFFFF>e #ip</font><br> $$ 4$ <font color=#FFFFFF>AxXC7v</font><br> $$ 4$ <font color=#FFFFFF>b-3{!</font><br> $$ 4$ <font color=#FFFFFF>XD+BF1</font><br> $$ 4$ <font color=#FFFFFF><r/9Sm</font><br> $$ 4$ <font color=#FFFFFF>T@uX</font><br> 9$ d$ <font color=#FFFFFF>Tt</font><br> $k $F <font color=#FFFFFF>a xY</font><br> $N z$" <font color=#FFFFFF>MQ2^</font><br> '*$o. .e$" <font color=#FFFFFF>yT|_ </font><br> "#*$$$$P*"" <font color=#FFFFFF>Xus</font><br><font color=#FFFFFF>©BlueLi论坛 -- BlueLi论坛 on\</font><br></font></marquee><font color=#FFFFFF>V</font><br><BR></td><td width=16></td></tr><tr><td></td><td valign=bottom><BR><BR><BR><BR><img src=http://www.blueli.com/bbs/non-cgi/images/none.gif width=1 height=3><BR><img src=http://www.blueli.com/bbs/non-cgi/images/signature.gif height=12><br><img src=http://www.blueli.com/bbs/non-cgi/images/none.gif width=1 height=5><BR><img src=http://www.spbdev.com/dpic/cGif.aspx border=0 onload="javascript:x=this.width;y=this.height;limity=screen.height/3;if(this.height>limity)this.height=limity; if(this.width>screen.width-333)this.width=screen.width-333" onClick="this.width=x;this.height=y"> <br><BR></span><BR></td></tr><tr><td colspan=2 height=22 valign=bottom><BR></td></tr></table></td></tr><tr><td colspan=2 height=1 bgcolor=#4D76B3></td></tr><tr><td><font color=#000000><img src=http://www.blueli.com/bbs/non-cgi/images/posttime.gif width=16 alt=发贴时间 align=absmiddle>2003/09/19 08:16pm <img src=http://www.blueli.com/bbs/non-cgi/images/ip.gif width=13 alt="" align=absmiddle>IP: 已设置保密</td><td align=right valign=bottom width=20%>[本文共5152字节] <a href=#top><img src=http://www.blueli.com/bbs/non-cgi/images/p_up.gif height=17 border=0 align=absmiddle title=返回顶端></a> </td>⌨️ 快捷键说明
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