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<TD width=*><B>于ode32用法的求助</B></TD>! L$ V( ` |; k- c; a% D
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<>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>( z6 k1 ]) z' A/ p' P/ I
<>1. function xp=harm(t,x);7 J, T* t0 ?/ m
2. k=2*pi; * f" e2 I6 [$ d1 _/ v3. xp(1)=x (2);6 t' U' a8 q* n7 c7 A
4. xp(2)=-k*k*x (1);</P> ; R" w# `4 V2 e: d<>( |/ f7 {$ p( `9 u4 A0 b
>> [t,x]=ode23(harm,0,1,[0 2*pi]) $ ]% S6 v6 ~8 x" ~9 ]0 \2 `??? Input argument 'x' is undefined.</P>5 G$ v; Y/ w8 ]# e: f
<>Error in ==> D:\matlabtest\harm.m; _5 A) q* _" p
On line 3 ==> xp(1)=x(2); </P>! ]) \" Q! L4 W( U# [3 i
<>总是提示”输入参数X未被定义”,可是很多书上都是这么写的可以求出来树枝解,恳求各位大侠指点!!</P></TD></TR></TABLE></BLOCKQUOTE></TD></TR> . I1 r3 k6 N3 A$ b- ^ C" ] f) \<TR># J( ^+ y2 l0 g. c- Z+ I! d
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<TD class=tablebody1 vAlign=center width=*>欢迎大家作客“矩阵工作室” , x5 }5 {' W1 Z! B w, G; I<TABLE cellSpacing=0 cellPadding=0 width="100%"> 0 j4 S l$ n7 R" D v % e& q( h# g. D; h1 L<TR># F6 W* ^+ h2 Y1 l9 |
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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>( z6 k1 ]) z' A/ p' P/ I
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