global Nt LfNt = 14;Lf = 3.00;d = 0.081;OD = 0.800;x_start = [ d OD ];[ x_solution, min_val ] = fminsearch( 'pr02_spring', x_start )d = x_solution(1);OD = x_solution(2)rho = 0.28;G = 11.7e6;Lw = 1.5; D = OD - d; w = rho * ( pi*d*d/4 ) * (pi*D) * Nt;ID = D - d;Na = Nt - 2;k = d*d*d*d*G / (8*D*D*D*Na); Fw = k * ( Lf - Lw );Ls = Nt * d; Fs = k * ( Lf - Ls );C = D / d;Ks = 1 + 0.5/C; tau = Ks*8*Fs*D / (pi*d*d*d); Sut = 184649 * ( d ^ -0.1625 ); Sys = 0.45 * Sut; Nfs = Sys / tau; disp( ' d OD Nt Lf weight' ) disp( ' [inch] [inch] [inch] [lbf]' ) disp( [ d OD Nt Lf w ] ) disp( ' ID k Fw Ls Nfs' ) disp( ' [in] [lbf/in] [lbf] [inch]' ) disp( [ ID k Fw Ls Nfs ] )
MATLAB: Why when i run code this error fv(:,1) = funfcn(x,varargin{:})
errorfminsearch
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