matrix unit

[HappyLarry]

How do you show the result when you multiply a 2x2 matrix by a 1x2 vector using the matrix unit?

Code: [Select]

program project1;

uses
  Classes, matrix;

var
  M:TMatrix2_double;
  V1,V2:TVector2_double;

begin
  writeln('---Matrices---');
  //M:=TMatrix_double.create;
  M.init(1,2,3,4);
  V1.init(5,6);
  V2:=M*V1;
  //How do I show the answer?

  writeln('----done------');
  readln;
end.
 

[Leledumbo]

http://www.freepascal.org/docs-html/rtl/matrix/tvector2_double.data.html

[HappyLarry]

Thanks Leledumbo - I have edited my code. It gives the correct  answer of
17
39

Code: [Select]

program project1;

uses
  Classes, matrix;

var
  M:TMatrix2_double;
  V1,V2:TVector2_double;

begin
  writeln('---Matrices---');
  M.init(1,2,3,4);
  V1.init(5,6);
  V2:=M*V1;
  writeln(V2.data[0]:8:0);
  writeln(V2.data[1]:8:0);[
  writeln('----done------');
  readln;
end.
The information in TMatrix really does need some easy examples to make things clearer.