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JENRRONľ³æ (ÕýʽдÊÖ)
THE CHOOSEN ONE
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³öÏÖWarning: Explicit solution could not be foundÎÊÌâÇóÖú ÒÑÓÐ1È˲ÎÓë
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ÎҵijÌÐòÊÇ£º d=1.4241,g=2.9820e-10,r=1.5,v1=0.27,v2=0.3,k=0.454+0.41*v2,h=500e6, e1=116e9,e2=205e9 e=((1-v1^2)/e1+(1-v2^2)/e2)^(-1) E1=sym('3.14*R*w-a=0') E2=sym('a^(0.5*d)/(2*(4-d)*3.14^(0.5*d)*g^(d-1)*(log(r))^(0.5))-R=0') E3=sym('(3.14*k*h/(2*e))^2*R-wc=0') E4=sym('2^(9-2*d)*g^(2*d-2)*log(r)*(3.14)^(d-3)*(e/k/h)^2*a^(1-d)*wc-w=0') %w1¼´w*,¼´ÁíÍâÄǸö³ÌÐòÖеÄw [a,R,w,wc]=solve(E1,E2,E3,E4) µ«ÊÇÔËÐнá¹ûÊÇ£º Warning: Explicit solution could not be found. > In solve at 169 In mainjijisuan1 at 8 a = [ empty sym ] R = [] w = [] wc = [] Çó¸ßÊÖÖ¸µã£¬Ð¡µÜÊÇÐÂÊÖ¡£¶àл |
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