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当你出现如下错误:
2 i& M3 x4 ~- R- G6 n) n2 WError using sym/subs>normalize (line 201)0 d3 B* u4 x2 v* T
OLD and NEW must have the same number of entries.0 s% p4 |6 w# c& ?+ S0 F- [
$ E6 w) ^3 K& j+ ^% v, Q0 g! YError in sym/subs>mupadsubs (line 136)& a# W0 N+ M6 M3 O$ M+ ]
[X2,Y2,symX,symY] = normalize(X,Y); %#ok
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6 r$ W$ F5 \: `6 j0 G* L9 \1 K$ xError in sym/subs (line 124)
/ W9 A! v; A+ C/ m5 z G = mupadsubs(F,X,Y);' O: y" ^5 v; K0 R2 v
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Error in Funval (line 20)8 T! x; l3 N+ y8 x$ ^! I4 Y& q
fv = subs(f,varvec,varval);
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Error in minNT (line 17)6 B. R2 }& y0 a& {7 R* ?
v=Funval(gradf,var,x0);
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Error in syong1 (line 4)
" r3 L/ \4 @ S1 M" M, ^8 v( x[x,mf]=minNT(f,[0 0],[t,s])
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7 r7 O+ x5 e; S6 K# {. f( x$ _: g你该考虑矩阵是否对应的问题,也就是行列向量的问题
% J1 X& k: _3 s! ]% K# G) f其实问题就出在这个地方:
# z1 ?1 e, s( B9 N- gfv = subs(f,varvec,varval);中varvec是【t,s】而varval是【0;1】
+ G7 a6 E8 F ~4 f) q所以正确的Funval如下:
* X+ m4 ]+ t2 U k O
$ d1 a7 h( ^* M6 z' L
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