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<TABLE cellSpacing=1 cellPadding=5 align=center>) B/ B7 A9 p; q. u3 P / X- a8 m' ]1 Q+ a: q* Z <TR>4 E2 d0 X5 U3 L/ G6 i ) ]* k+ `( X5 u' U0 ~ 9 T! |" T, o2 B( |# p1 N. Q( [ ( y) z+ T' G I& ]. x+ h1 v 6 u& ~. A8 S" y1 c <TR>+ f6 L% V3 f2 E/ l <TD width="100%">1 Q7 X# U' K( h! c* n% p <TABLE cellSpacing=0 cellPadding=0 width="100%" border=0>+ `1 f% K# u# ^7 p% A 6 r. G. w! U+ d% X c8 r; D w9 L* m! f3 Z, }9 ? c; H& @0 D1 w' _) V7 U <TABLE cellSpacing=0 cellPadding=0 width="100%" border=0>4 B( `% e( K2 V( L, }* j, O- v5 b 9 E0 I6 V( f3 l) q' { 3 j% b2 m" U$ e; [3 m @( q, Z ; p) i# E2 ^. H8 B- ~- C. t; T <TD align=right width=60></TD></TR></TABLE></TD></TR></TABLE>+ p* |* C$ m j( m! M* S - w) c4 E2 K, a* v; l- r <4 u9 x' A; o# R. U; @. f % u) I* `0 @" {( z# e 2. k=2*pi;0 L; c5 M( S$ i! b 4 q% s9 X3 s6 J 4. xp(2)=-k*k*x (1);</P>7 }$ g& c3 P* G4 {. @ <& o% T" q) z% k) s( a4 U 6 a* T) m2 d% \' G" V/ e ??? Input argument 'x' is undefined.</P>' v3 f6 E6 {" C8 n1 Q6 I7 A( k* j <6 J( F9 r% |; y. u6 m On line 3 ==> xp(1)=x(2); </P>! y( f. g/ h+ E: x6 @ <9 Z8 _7 k: I/ B0 I' | , R, ~+ p" V5 p <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>$ x: p* J/ Z5 n. 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G U2 ` $ F. E |, _3 I% ]: b* F" _ <TABLE cellSpacing=1 cellPadding=5 align=center>5 g. t# B, F$ Z. c ) n( n+ I2 d) `! [1 n + t% Z0 r1 H# v' x4 d5 z* t' b <TD class=tablebody2 vAlign=top width=175>, `4 D& A2 C8 _4 w& D% W <TABLE cellSpacing=0 cellPadding=4 width="100%">& i* p% m$ S! j, V+ U5 X 2 H# } \5 h$ ]* G <TR>8 c! k) a# ?$ W I0 G <TD vAlign=center width=*> <FONT color=#000066><B>21101244</B></FONT> </TD>, a+ ^8 a# i- A: m V. p$ \" v; z) D2 | 5 Y( b; p8 Y2 B4 ^! W' x % f8 U# U- N5 `! {) \- ~- z$ C! ] </TD>2 A" j* ?) _9 N- K# H6 \. T% h <TD class=tablebody2 vAlign=top width=*>! v8 P9 _; t- G0 q4 ~ <TABLE width="100%">6 l2 F% ]( q% y# W$ v 0 q$ }) u& v: `9 A <TR>! 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>4 u9 x' A; o# R. U; @. f
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