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+--- Forum: HP Prime Software Library (/forum-15.html)
+--- Thread: Gauss-Jordan Elimination Method (/thread-5273.html)
Gauss-Jordan Elimination Method - Eddie W. Shore - 12-05-2015 03:33 AM
HP Prime: Gauss-Jordan Elimination Method
Program:
Code:
EXPORT GAUSSJORDAN(mat)
BEGIN
// Guass-Jordan Elimination
// 2015-12-04
// Matrix MUST have
// mat[k,k]≠0
LOCAL l,r,c,j,k,h,v;
PRINT();
l:=SIZE(mat);
r:=l[1]; c:=l[2];
j:=1;
// Main row loop
FOR k FROM 1 TO r DO
// Secondary row loop
FOR h FROM 1 TO r DO
// k = target row
// h = test row
// Pivot operation
IF h≠k THEN
v:=−mat[h,k]/mat[k,k];
mat:=SCALEADD(mat,v,k,h);
PRINT();
PRINT("After Step "+j);
PRINT(mat);
WAIT(0);
j:=j+1;
END;
IF mat[k,k]≠1 THEN
v:=1/mat[k,k];
mat:=SCALE(mat,v,k);
PRINT();
PRINT("After Step "+j);
PRINT(mat);
WAIT(0);
j:=j+1;
END;
END;
END;
PRINT();
PRINT("Result:");
PRINT(mat);
// Final WAIT not needed
RETURN mat;
END;Blog entry and detail: http://edspi31415.blogspot.com/2015/12/hp-prime-gauss-jordan-elimination-method.html