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fsolve¼ÆËã½á¹ûÎÊÌâ
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¼ÆËã½á¹û¸Ð¾õÎó²îºÃ´ó£¬ÊÇÓÉÓÚ³õֵȡֵÔì³ÉµÄÓ°ÏìÂ𣬻¹ÊÇÒªÉèÖÃoptionÀ´¿ØÖƾ«¶È£¬µÚÒ»´ÎʹÓÃmatlabÒ»Çϲ»Í¨£¬Çë´ó¼Ò°ïæ¿´Ï¡£ First-Order Norm of Iteration Func-count Residual optimality Lambda step 0 8 39.2026 1.13e+003 0.01 1 16 0.00103045 0.705 0.001 0.294456 2 24 3.55079e-005 0.0727 0.0001 0.237055 3 32 7.28141e-006 0.19 1e-005 0.144512 4 40 2.91808e-006 0.0123 1e-006 0.0248491 5 48 2.90763e-006 3.58e-007 1e-007 0.000338087 6 56 2.90763e-006 1.02e-009 1e-008 1.90914e-006 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 and the vector of function values is near zero as measured by the selected value of the function tolerance. y = -2.2413 2.2083 -0.1310 0.1318 1.0596 0.0211 -0.0272 fval = 0.0000 0.0008 -0.0008 0.0003 0.0000 0.0000 -0.0011 0.0006 ÏÂÃæÊÇÎÒÒª½âµÄ·½³Ì×é function F=myfun(x) b=1;a=1; F=[-0.0575*x(3)/a-x(7)*a*0.5-x(6); x(3)/a^2+x(4)+17.39*x(7)*log(a)+0.8695652174*b*log(a); -x(1)/(x(5)^2)-x(2)+x(3)/(x(5)^2)+x(4)-92.49880554*x(7)*log(x(5))+0.8695652174*b*log(x(5)); 0.0065*x(1)/x(5)-0.0026*x(2)*x(5)-0.0575*x(3)/x(5)+x(7)*x(5)*((0.7-0.4*log(x(5)))/1.4-0.9347826087); -2*x(1)/(x(5)^2)+109.8901099*x(7)-b; 2*x(1)/(1.5^2)-109.8901099*x(7)-b; 0.444444444444444*x(1)/a^2+x(2)+109.8901099*x(7)*log(1.5*a); -x(1)*log(1.5*a/x(5))+0.5*(1.5^2*a^2-x(5)^2)*x(2)-x(3)*log(x(5)/a)+0.5*(x(5)^2-a^2)*x(4)+17.39130435*x(7)*(0.5*x(5)^2*(log(x(5))+0.5)-0.5*a^2*(log(a)+0.5))+109.8901099*x(7)*(0.5*1.5*1.5*a^2*(0.5+log(1.5*a))-0.5*x(5)^2*(log(x(5))+0.5))+0.0209742*1.5^2*a^2*b+0.8695652174*b*(0.5*x(5)^2*(log(x(5))+0.5)-0.5*a^2*(log(a)+0.5))]; ѡȡµÄ³õÖµÊÇx0=[-2,2,-0.5,0.5,1.05,0.01,-0.01] |
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