document.write( "Question 1176200: The sum of all the eigenvalues of the matrix\r
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Algebra.Com's Answer #802517 by ikleyn(52814) $\"\"$ $\"About$

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document.write( "The sum of all eigenvalues of any square matrix  A  is the same as the trace of A (that is, the sum of the diagonal elements of A).\r\n" );
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document.write( "ANSWER.  The sum of the n eigenvalues of A is  -1 + 1 + 2 = 2.\r\n" );
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\n" ); document.write( "\n" ); document.write( "See this source\r
\n" ); document.write( "\n" ); document.write( "https://brilliant.org/discussions/thread/product-and-sum-of-eigenvalues/\r
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\n" ); document.write( "\n" ); document.write( "Solved, answered and explained.\r
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