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升级 ![](source/plugin/plbeautify/images/expl.gif) ![](source/plugin/plbeautify/images/expc.gif) 91% TA的每日心情![](source/plugin/dsu_paulsign/img/emot/ng.gif) | 难过 2012-8-27 18:22 |
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签到天数: 1 天 [LV.1]初来乍到
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本帖最后由 forcal 于 2011-1-17 20:28 编辑 + y- J* q7 i- h( w/ V, c+ e8 b# e
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例子2:求复数方程组:
% c3 K6 n4 w( q8 f- (2+5i)*x1-x2^(2-3i)-exp(-x1)=0
! L: l+ [\" x/ r - -(x1^3)+x1*x2-exp(-x2)=0
h. i* a: i4 o+ | } m
复制代码
: M0 i* n3 J- Z2 Z0 C* R( N5 T3 c ]代码:1 [% k" i4 D+ ^
![](source/plugin/imc_colorcode/images/loading.gif) - !using["fcopt"];
- 7 M\\" l/ o2 p. r\\" a7 ~2 {) v4 I
- c: cf(x1,x2,y1,y2)=
- . i5 C; W# V8 F, i( }: r
- {+ K1 g4 }0 [* d
- y1=(2+5i)*x1-x2^(2-3i)-exp(-x1),0 P9 a! f/ c+ s0 d# m( ^! [
- y2=-(x1^3)+x1*x2-exp(-x2)2 m) r- ]: M& E. ^, b' E' s
- };5 l/ F$ N `, f0 W
- cc(x11,x12,x21,x22,y11,y12,y21,y22)= cf(x11,x12,x21,x22,&y11,&y12,&y21,&y22);
- - F% M( W& G4 @ U
- solve[HFor("cc")];
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6 l5 p: A+ ^$ h3 J u结果(多次求解,每组最后一个是误差):! Y; r! o1 B' n! c( W* k' j4 d
0.350403406122754 -0.2581172046401702 0.9031492305415151 0.2062068702236727 3.500829247998799e-014
" f E$ y- L0 j2 q! P1 C
. q/ y4 A% O9 S' p; j8.343862612128539e-002 -0.1745973157301181 0.3407059687466865 -3.686653995029365 1.014802625489917e-011( L2 }" p3 V$ j5 M& _. E3 h6 m
0 H1 t* Q N- F! \ f
-2.866006054280364e-002 -1.195892184488039e-002 1.330587481557424 -8.406178015373364 1.344455731312484e-011. t7 I. c$ y- | `
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0.3248221986204087 -0.8164562030925229 8.588879599246295e-002 0.2894415311777754 3.570823474245571e-011
. {2 e- m8 R3 A' x A9 {
" X0 z. g0 R' {& g4 k9 E% a8.663773118603429e-003 5.927370162144334e-002 2.009821712522968 -0.9744617637719372 1.073856633613092e-010
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% S! {" ^, [6 f: _5 L0.1575094449966286 -6.233406303049387e-003 -0.5428160523568441 -10.90400468060007 1.542485713397894e-013
7 L0 o# b7 \8 I/ o& y$ g
% ?9 ]: \5 x; p) {, V9 ~0.5108186106709388 0.8884343740105763 -3.912183017503166e-002 1.868542038988761e-002 4.891644231048831e-012
' d3 g2 U2 c& ]( F: G6 m$ A+ G: ] |# |5 _ b( `
-1.000140126356298 4.481460412883024e-005 -2.935625999646882e-002 4.580361872777336e-003 1.741254712865244e-012
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! p8 i8 O5 |( [$ r+ u结果可能不全,欢迎大家补充。* i+ z5 C8 x# ?. a, c; y; z, C, ~
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