division by zero problem
3 views (last 30 days)
Show older comments
Teerapong Poltue
on 7 Nov 2020
Commented: Teerapong Poltue
on 7 Nov 2020
I'm running the code
syms a b c
interval = [-3:0.1:3];
a= interval ;
b= interval;
c= interval;
[A,B,C] = meshgrid(a,b,c);
cur = subs(k,{x y z},{A B C});
which k is given by
syms x y z
f = cos(x) + cos(y) + cos(z);
fx = diff(f,x);
fy = diff(f,y);
fz = diff(f,z);
fxx = diff(fx,x);
fxy = diff(fx,y);
fxz = diff(fx,z);
fyx = diff(fy,x);
fyy = diff(fy,y);
fyz = diff(fy,z);
fzx = diff(fz,x);
fzy = diff(fz,y);
fzz = diff(fz,z);
mat = [fxx fxy fxz fx; fyx fyy fyz fy; fzx fzy fzz fz; fx fy fz 0];
no = det(mat);
de = (fx^2 + fy^2 + fz^2)^2;
k = de/no;
But it turns out that
Error using symengine
Division by zero.
Error in sym/subs>mupadsubs (line 160)
G = mupadmex('symobj::fullsubs',F.s,X2,Y2);
Error in sym/subs (line 145)
G = mupadsubs(F,X,Y);
Error in curvature (line 41)
cur = subs(k,{x y z},{A B C});
0 Comments
Accepted Answer
More Answers (0)
See Also
Categories
Find more on Linear Algebra in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!