If-A-4-x-2-2x-3-x-1-is-symmetric-then-x-

Question Number 55841 by gunawan last updated on 05/Mar/19

If A = [\begin{matrix} 4 & x + 2 \\ 2 x - 3 & x + 1 \end{matrix}] is symmetric, then x =

Answered by gunawan last updated on 05/Mar/19

A = A^{t}

[\begin{matrix} 4 & x + 2 \\ 2 x - 3 & x + 1 \end{matrix}] = [\begin{matrix} 4 & 2 x - 3 \\ x + 2 & x + 1 \end{matrix}]

x + 2 = 2 x - 3

x = 5

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