AP EAMCET202120 Aug 2021Morning ShiftMathematicsMatricesActual

The trace of the matrix A = 1 - 5 7 0 7 9 11 8 9 is

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Correct answer

A. 17

Step-by-step solution

Given, A = 1 - 5 7 0 7 9 11 8 9 . To find : trace of matrix Now, We know that, Trace of matrix t r A = sum of diagonal elements. ⇒ t r A = a 11 + a 22 + a 33 ⇒ t r A = 1 + 7 + 9 = 17 . Hence, trace of matrix is 17 .

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