Matriz Inversa 3X3

aqui el codigo:

<html> 
  <head> 
  <title>Calculando determinantes 2x2 javascript</title> 
  </head> 
  <body>
  <script type="text/javascript" src="zepto.min.js" > </script>
  <script type="text/javascript">
//creando variables
  var a00,a01,a02,a10,a11,a12,a20,a21,a22,total;
  //editando funcion para calcular ls determinantes
  function Calcular_determinante(){
  //asignando valores
   /* aqui muestro el orden de los nombres de la variables a las cuales les asigno los numeros 
               !a00 a10 a20! l2a00 l2a10
               !a01 a11 a21! l2a01 l2a11
               !a02 a12 a22! l2a02 l2a12*/
  a00=document.getElementById("a00").value;
  a01=document.getElementById("a01").value;
  a02=document.getElementById("a02").value;
  a10=document.getElementById("a10").value;
  a11=document.getElementById("a11").value;
  a12=document.getElementById("a12").value;
  a20=document.getElementById("a20").value;
  a21=document.getElementById("a21").value;
  a22=document.getElementById("a22").value;
  

  /*
   si        
           
               !a00 a10 a20! l2a00 l2a10
               !a01 a11 a21! l2a01 l2a11
               !a02 a12 a22! l2a02 l2a12
           total=a00*a11*a22 + a10*a21*aa02 +a20*aa01*aa12;
           Total=Total+(a02*a11*a20)*-1 + (a12*a21*l2a00)*-1 + (a22*l2a01*l2a10)*-1;
              total.setText(String.valueOf(Total));
              add(total);
 */
 total=a00*a11*a22 + a10*a21*a02 +a20*a01*a12;
 total=total+(a02*a11*a20)*-1 + (a12*a21*a00)*-1 + (a22*a01*a10)*-1;

 if(total!=0){
  var t=$("#total");
  
    t.html((a11*a22-a21*a12)/total+"  ");
    t.html(t.html()+"  "+((a01*a22-a21*a02)*-1)/total);
    t.html(t.html()+"  "+(a01*a12-a11*a02)/total+"<br>"); 
    t.html(t.html()+"  "+((a10*a22-a20*a12)*-1)/total);
    t.html(t.html()+"  "+((a00*a22-a20*a02))/total);
    t.html(t.html()+"  "+((a00*a12-a10*a02)*-1)/total+"<br>");
 t.html(t.html()+"  "+((a10*a21-a20*a11))/total);
    t.html(t.html()+"  "+((a00*a21-a20*a01)*-1)/total);
    t.html(t.html()+"  "+(a00*a11-a10*a01)/total);                                                              
                              
 
     }else{
        var t=$("#total");
           t.html("Error el det da 0");}
 
 

 
 
 }

  </script>
  
  <br>Ingrese los valores<br>
    <input type="text"  id ="a00">         <input type="text"  id ="a01"> <input type="text"  id ="a02">
<br><input type="text"  id ="a10">         <input type="text"  id ="a11"> <input type="text"  id ="a12">
<br><input type="text"  id ="a20">         <input type="text"  id ="a21"> <input type="text"  id ="a22">    
<br><input type="button" onClick="Calcular_determinante()" value="Calcular">
 
<div id="total">Total: </div> 

  
  </body> 
</html>

Descargar ejemplo:

Calculando matriz invesa 3x3 javascript

Javascript

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