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alice919金蟲 (小有名氣)
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[求助]
幫我看看問題出在哪?
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options = Display: 'iter' MaxFunEvals: [] MaxIter: [] TolFun: [] TolX: [] FunValCheck: [] OutputFcn: [] PlotFcns: [] ActiveConstrTol: [] Algorithm: [] AlwaysHonorConstraints: [] BranchStrategy: [] DerivativeCheck: [] Diagnostics: [] DiffMaxChange: [] DiffMinChange: [] FinDiffType: 'central' GoalsExactAchieve: [] GradConstr: [] GradObj: [] HessFcn: [] Hessian: [] HessMult: [] HessPattern: [] HessUpdate: [] InitialHessType: [] InitialHessMatrix: [] InitBarrierParam: [] InitTrustRegionRadius: [] Jacobian: [] JacobMult: [] JacobPattern: [] LargeScale: 'off' LevenbergMarquardt: [] LineSearchType: [] MaxNodes: [] MaxPCGIter: [] MaxProjCGIter: [] MaxRLPIter: [] MaxSQPIter: [] MaxTime: [] MeritFunction: [] MinAbsMax: [] NodeDisplayInterval: [] NodeSearchStrategy: [] NonlEqnAlgorithm: [] NoStopIfFlatInfeas: [] ObjectiveLimit: [] PhaseOneTotalScaling: [] Preconditioner: [] PrecondBandWidth: [] RelLineSrchBnd: [] RelLineSrchBndDuration: [] ScaleProblem: [] Simplex: [] SubproblemAlgorithm: [] TolCon: [] TolConSQP: [] TolGradCon: [] TolPCG: [] TolProjCG: [] TolProjCGAbs: [] TolRLPFun: [] TolXInteger: [] TypicalX: [] UseParallel: [] Norm of First-order Trust-region Iteration Func-count f(x) step optimality radius 0 3 2.06697e+014 2.49e+014 1 1 6 1.03581e+012 0.92278 2.86e+013 1 2 9 4.38753e+007 0.0759773 5.33e+011 2.31 3 12 0.0824035 0.000500989 3.85e+007 2.31 4 15 1.18085e-013 2.17124e-008 3.77e+003 2.31 5 16 1.18085e-013 3.37394e-017 3.77e+003 2.31 Equation solved, fsolve stalled. fsolve stopped because the relative size of the current step is less than the default value of the step size tolerance squared and the vector of function values is near zero as measured by the default value of the function tolerance. <stopping criteria details> x = 1.0000 0.9993 fval = 1.0e-006 * -0.3436 0.0006 extiflag = 2 output = iterations: 5 funcCount: 16 algorithm: 'trust-region-dogleg' firstorderopt: 3.7653e+003 message: [1x774 char] JAC = 1.0e+010 * 1.0957 -0.0000 -0.0013 0.0013 幫我看看我的問題出在哪,我該怎么解決?這是一個(gè)用來計(jì)算化學(xué)平衡組成 [ 來自小組 化工工程工藝 ] |
主管區(qū)長(zhǎng) (職業(yè)作家)
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專家經(jīng)驗(yàn): +1059 |
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出現(xiàn)了。 這一組x已經(jīng)使得原方程相當(dāng)接近于0了,如果這組解符合實(shí)際的話,就可以采用。 MATLAB的Help中Equation Solved, fsolve Stalled的意思是: fsolve found a point where the sum of squares of function values is less than the square root of the TolFun tolerance. However, the last step was less than the TolX tolerance, indicating the function may be changing rapidly, or that the function is not smooth near the final point. This is the meaning of stalled. |

主管區(qū)長(zhǎng) (職業(yè)作家)
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專家經(jīng)驗(yàn): +1059 |

金蟲 (小有名氣)
主管區(qū)長(zhǎng) (職業(yè)作家)
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專家經(jīng)驗(yàn): +1059 |

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