Problem with displaying format
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I tired for displaying Value of f and conclusion but it seem not working. here is my code:
clc
clear all
syms x y
f(x,y)=x^3-3*x*y+y^3;
fx=diff(f,x);
fy=diff(f,y);
fxx=diff(fx,x);
fyy=diff(fy,y);
fxy=diff(fx,y);
D=(fxx*fyy)-(fxy)^2;
eqns=[fx==0,fy==0];
vars=[x y];
[sol_x sol_y]=solve(fx==0,fy==0,'Real',true);
conclusion={};
f_val=[];
for i=1:length(sol_x)
if( subs(D,{x,y},{sol_x(i),sol_y(i)})>0 && subs(fxx,{x,y},{sol_x(i),sol_y(i)})>0 )
conclusion{end+1}='min';
f_val(end+1)=f(sol_x(i),sol_y(i));
elseif(subs(D,{x,y},{sol_x(i),sol_y(i)})>0 && subs(fxx,{x,y},{sol_x(i),sol_y(i)})<0)
conclusion{end+1}='max';
f_val(end+1)=f(sol_x(i),sol_y(i));
elseif(subs(D,{x,y},{sol_x(i),sol_y(i)})<0)
conclusion{end+1}='saddle';
f_val(end+1)=f(sol_x(i),sol_y(i));
else
conclusion{end+1}='undetermine';
f_val(end+1)=f(sol_x(i),sol_y(i));
end
end
conclusion'
f_val'
result=[num2cell(f_val) conclusion']
error:
Error using horzcat Dimensions of matrices being concatenated are not consistent.
Any solution will be aprreciated.
Thanks in advance.th
4 commentaires
Ankit
le 30 Sep 2019
there is problem in your last statement. It should looks something like this:
result=[num2cell(f_val) conclusion]
Is this what you are expecting?
emonhossain roy
le 1 Oct 2019
KALYAN ACHARJYA
le 1 Oct 2019
When you use the following, then there is no error-
result=[num2cell(f_val) conclusion]
The answer provider on this Matlab Answer may not be from the same subject, it would be easy to answer, if you can provide us with the expected result?
emonhossain roy
le 1 Oct 2019
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