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<TABLE cellSpacing=1 cellPadding=5 align=center>$ C: m, M- E+ K } . m: D, R F: T/ r/ e ]' Q & e: S- W- t- X, P <TD class=tablebody1 vAlign=top width=*>% n. c0 d% e8 q* ~, {& p3 B. L. ^ <BLOCKQUOTE>/ T% H* q8 d% b4 \8 R! f" n; i& S 7 \+ ]* a2 U' Z9 s8 G2 {1 Q ) o; c F# l/ o! F# Y4 R ' N' \ B# U) u7 J+ @% ? & O7 E! t9 Y" u2 L <TABLE cellSpacing=0 cellPadding=0 width="100%" border=0>: w$ J1 H) h4 ]9 ~0 \. _* I& [ ! o' w, f }2 }* `' I1 }! ~ <TR>4 ?$ ]& P+ \$ c9 p3 ]( w) o <TD width=*>, O+ w" n. `' T" E <TABLE cellSpacing=0 cellPadding=0 width="100%" border=0>: ^) L+ Q5 ~. H # \2 z; _* _, j/ n# g7 e) Y 0 @* I2 Y0 C7 ]& k, a; E <TD width=*><B>于ode32用法的求助</B></TD>! q( j! Y$ U# `: Z- L4 A: j7 e ' g* _2 W) R0 w9 }+ f ( T! {: Z' _. Y6 I8 d 9 A9 h6 M0 R+ U0 v4 f " ]! g; j& R: w+ y; @& L3 t 2. k=2*pi;/ \/ c# l8 {* ]5 q* `2 b 3. xp(1)=x (2);/ f4 m4 v; y; W, W/ O; H 4. xp(2)=-k*k*x (1);</P>6 B. D' U1 s+ N4 r3 ^ J- | 0 b, N8 y. f! j2 G* F- `: J >> [t,x]=ode23(harm,0,1,[0 2*pi])6 b* ?2 N' O6 e! p3 _ ' I) f5 ~1 C8 { 0 F' b* s3 S# P6 F. \ On line 3 ==> xp(1)=x(2); </P>7 [# S6 s# v+ [) r s/ G+ w <& p9 `! ?1 X% P; @5 k 0 k4 V0 {$ \4 }/ r <TD class=tablebody1 vAlign=center align=middle width=175><a href="http://www.madio.net/bbs/look_ip.asp?boardid=87&userid=11201&ip=*.*.*.*&action=lookip" target="_blank" ><IMG src="http://www.madio.net/bbs/Skins/Default/ip.gif" align=absMiddle border=0></A> 2005-4-12 13:14:36</TD>+ P. j% K' |! k. m1 P! P / v. Z: K% N) x$ s0 C; x* l <TABLE cellSpacing=0 cellPadding=0 width="100%">, ]4 z) L! l6 C , v# x' I, j k: L 1 o8 I7 i3 Z# S: r4 t6 E! 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zan
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发表于 2005-4-12 15:41
>在求解常微分方程X"(t)+k^2*X=0的过程中遇到的问题,很是郁闷!!!!!!!</P>9 A9 h6 M0 R+ U0 v4 f
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