Not getting the output. Please Help?

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Saad Salman
Saad Salman 2014-4-30
评论： José-Luis 2014-4-30
function [X_symbolic, X_mat, X_gau] = Linsys(A,b)
choice = menu('Please select a solution method from the following:', 'Symbolic Math', 'Matrix Algebra', 'Gaussian Elimination');
switch choice case 'Symbolic Math' tic
Force_Ax = sym('1 + F_AC - F_AB*(4/(2*sqrt(5))) = 0')
Force_Ay = sym('1 - F_AB*(2/(2*sqrt(5))) = 1')
Force_Bx = sym('F_AB*(4/(2*sqrt(5))) - F_BD*(4/(2*sqrt(5))) - F_BC*(2/(2*sqrt(2))) = 0')
Force_By = sym('F_AB*(2/(2*sqrt(5))) - F_BD*(2/(2*sqrt(5))) + F_BC*(2/(2*sqrt(2))) = 2')
Force_Cx = sym('F_CE - F_AC + F_BC*(2/(2*sqrt(2))) + F_CD*(2/(2*sqrt(5))) = 0')
Force_Cy = sym('F_CD*(4/(2*sqrt(5))) - F_BC*(2/(2*sqrt(2))) = 0')
Force_Dx = sym('F_BD*(4/(2*sqrt(5))) - F_DF*(4/(2*sqrt(5))) - F_DE*(2/(2*sqrt(2))) - F_CD*(2/(2*sqrt(5))) = 0')
Force_Dy = sym('F_BD*(2/(2*sqrt(5))) + F_DE*(2/(2*sqrt(2))) - F_CD*(4/(2*sqrt(5))) - F_DF*(2/(2*sqrt(5))) = 2')
Force_Ex = sym('F_EH - F_CE + F_DE*(2/(2*sqrt(2))) - F_EG*(2/(2*sqrt(2))) = 0')
Force_Ey = sym('F_EF - F_DE*(2/(2*sqrt(2))) - F_EG*(2/(2*sqrt(2))) = 0')
Force_Fx = sym('F_DF*(4/(2*sqrt(5))) - F_FG*(4/(2*sqrt(5))) = 0')
Force_Fy = sym('F_DF*(2/(2*sqrt(5))) + F_FG*(2/(2*sqrt(2))) - F_EF = 1.75')
Force_Gx = sym('F_FG*(2/(2*sqrt(2))) + F_EG*(2/(2*sqrt(2))) - F_GH*(2/(2*sqrt(2))) = 0')
Force_Gy = sym('F_EG*(2/(2*sqrt(2))) + F_GH*(2/(2*sqrt(2))) - F_FG*(2/(2*sqrt(2))) = 1.5')
Force_Hx = sym('F_GH*(2/(2*sqrt(2))) - F_EH = 0')
Force_Hy = sym('1 - F_GH*(2/(2*sqrt(2))) = 0.75')
[S1,S2,S3,S4,S5,S6,S7,S8,S9,S10,S11,S12,S13,S14,S15,S16] = solve(Force_Ax,Force_Ay,Force_Bx,Force_By,Force_Cx,Force_Cy,Force_Dx,Force_Dy,Force_Ex,Force_Ey,Force_Fx,Force_Fy,Force_Gx,Force_Gy,Force_Hx,Force_Hy)
X_symbolic = [S1,S2,S3,S4,S5,S6,S7,S8,S9,S10,S11,S12,S13,S14,S15,S16]
tic
case 'Matrix Algebra'
tic
X_mat = inv(A)*b
toc
case 'Gaussian Elimination'
tic
X_gau = GEpivot(A,b)
toc
end
  1 个评论
José-Luis
José-Luis 2014-4-30
The way your problem is set up, your program generates only one output, but you are always asking it to produce three.

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