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l274595924新蟲 (初入文壇)
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[求助]
matlab已知f(x,y)=0,已知一組x如何求對應的y值? 已有1人參與
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求助各位大神,我的代碼如下: x=[0,0.0304878,0.0762195,0.121951,0.150745,0.179539,0.210027,0.240515,0.269309,0.299797,0.330285,0.360772,0.389566,0.420054,0.450542,0.479336,0.509824,0.540312,0.570799,0.5993,0.630081,0.660569,0.689363,0.719851,0.750339,0.780827,0.809621,0.840108,0.870596,0.89939,0.929878,0.960366,0.98916,1.01965,1.05014,1.08062,1.10942,1.13991,1.17039,1.19919,1.22967,1.26016,1.29065,1.31944,1.34993,1.38042,1.40921,1.4397,1.47019,1.50068,1.52947,1.55996,1.59045,1.61924,1.64973,1.67683,1.7107,1.76999,1.80047,1.82927,1.85976,1.89024,2.0105]; y=[0,0.685871,1.23457,2.05761,2.46914,3.08642,3.7037,4.32099,5.07545,5.76132,6.58436,7.40741,8.27618,9.0535,9.87654,10.2652,11.1111,11.8656,12.6886,13.5117,14.3576,15.0206,15.7979,16.6438,17.4211,18.1984,18.9986,19.8674,20.7133,21.6049,22.2222,22.8395,23.4568,23.9369,24.4627,24.8971,25.3086,25.5144,25.8802,26.1088,26.3374,26.5432,26.5432,26.5432,26.3374,26.1317,25.9259,25.3086,24.5542,23.5254,22.4508,21.0791,19.5245,17.9012,16.1408,14.8148,13.3288,12.3228,12.0942,11.9113,11.9113,11.9113,11.9113]; i=1; n=length(x); while i<=n fsolve(\'2.52*x(i)*10*(1-0.745538517+0.745538517*exp(-((0.203565947*(y+2)*2.52*x(i)/(y-2*0.33)+(y-1)*2.52*x(i)/(y-2*0.33)/sqrt(3)- 2.271929415)/31.99147744)^3.768957857))+2*0.33-y\',y(i)) i=i+1; end 出現(xiàn)提示如下: ??? Error using ==> inlineeval at 15 Error in inline expression ==> 2.52*x(i)*10*(1-0.745538517+0.745538517*exp(-((0.203565947*(y+2)*2.52*x(i)/(y-2*0.33)+(y-1)*2.52*x(i)/(y-2*0.33)/sqrt(3)- 2.271929415)/31.99147744)^3.768957857)))+2*0.33-y ??? Error: Unbalanced or unexpected parenthesis or bracket. Error in ==> inline.feval at 36 INLINE_OUT_ = inlineeval(INLINE_INPUTS_, INLINE_OBJ_.inputExpr, INLINE_OBJ_.expr); Error in ==> fsolve at 195 fuser = feval(funfcn{3},x,varargin{:}); Error in ==> qiujie at 6 fsolve(\'2.52*x(i)*10*(1-0.745538517+0.745538517*exp(-((0.203565947*(y+2)*2.52*x(i)/(y-2*0.33)+(y-1)*2.52*x(i)/(y-2*0.33)/sqrt(3)- 2.271929415)/31.99147744)^3.768957857)))+2*0.33-y\',y(i)) 各位大神能幫我看一下么?感激不盡 |

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