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Gaspi

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Complet Question:...

Gaspi 5
January 13 2011
1 0

Sorry, the complet question is this:

 

Given the matrix
  A = RTABLE (145776372, MATRIX ([[a, 2], [a, b])], Matrix) to calculate values for b which satisfies the equation
   A ^ 2 +3 * Delta * A + I = 0; being  Delta, the determinant of A.

 

Your code is corret, but delta is not good, because, delta is determinant [A]. I change your code for this:

 

 solve(convert(A^2 - 3*A - Determinant(A)*IdentityMatrix(2), set),{a,b});


And solution is:                    {a = 2, b = 1}, {a = 1, b = 2}

Is correct????


Complet Question:...

Gaspi 5
January 13 2011

Sorry, the complet question is this:

 

Given the matrix
  A = RTABLE (145776372, MATRIX ([[a, 2], [a, b])], Matrix) to calculate values for b which satisfies the equation
   A ^ 2 +3 * Delta * A + I = 0; being  Delta, the determinant of A.

 

Your code is corret, but delta is not good, because, delta is determinant [A]. I change your code for this:

 

 solve(convert(A^2 - 3*A - Determinant(A)*IdentityMatrix(2), set),{a,b});


And solution is:                    {a = 2, b = 1}, {a = 1, b = 2}

Is correct????


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