If-A-1-5-7-0-7-9-11-8-9-then-trace-of-matrix-A-is-

Question Number 81874 by zainal tanjung last updated on 16/Feb/20

If A = [\begin{matrix} 1 & - 5 & 7 \\ 0 & 7 & 9 \\ 11 & 8 & 9 \end{matrix}] then trace of

matrix A is

Commented by jagoll last updated on 16/Feb/20

t r c (A) = 17

Commented by mathmax by abdo last updated on 16/Feb/20

t r (A) = Σ a_{i i} = 1 + 7 + 9 = 17