Create a Matrix from defined variables

Hey guys, I'm trying to create a matrix with combined math operations from already defined variables in the workspace but I always get an error. I would really appreciate some help :)

Variables :

c1=440

c2=250

r1= 50

r2=25

Matrix :

C=[c1*r1^2, c1*r1*r2, 0;

c1*r2*r1, c2+c1*c2^2, -c2;

0, -c2, c2]

[Torsten]

For me, it works fine.

What error message do you get ?

[wissal zaher]

That in order to define a function I have to use brackets but now it worked somehow.. I don't know why it was bugging

Answer 1

[KSSV]

c1=440 ;
c2=250 ;
r1= 50 ;
r2=25 ;

C=[c1*r1^2,    c1*r1*r2,   0;
   c1*r2*r1, c2+c1*c2^2, -c2;
   0,          -c2,       c2]

C = 3×3

1100000 550000 0 550000 27500250 -250 0 -250 250

[wissal zaher]

now it worked ! I don't know why I was getting an error earlier. Thanks :)

Answer 2

[Louis Alexander]

this code is right.

c1=440 

c1 = 440

c2=250 

c2 = 250

r1= 50 

r1 = 50

r2=25 

r2 = 25

C=[c1*r1^2,    c1*r1*r2,   0;
   c1*r2*r1, c2+c1*c2^2, -c2;
   0,          -c2,       c2]

C = 3×3

1100000 550000 0 550000 27500250 -250 0 -250 250

there could other reasons for the error.

[wissal zaher]

The error seems to be sorted out :) thanks