1 2 3
① If
A =
is a symmetric matrix,
2 5 6
3 x
Then findx

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2 thoughts on “1 2 3<br />① If<br />A =<br />is a symmetric matrix,<br />2 5 6<br />3 x<br />Then findx<br /><br />​”

1. Answer:

   what is your question I can’t understand.

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2. Answer:

   Step-by-step explanation:

   Given,

   A is a symmetric matrix

   Then , Here a =2, b=5, c=6, d=x

   So determinant of A = a × d – b × c = 2 × x – 5 × 6 ⇒ 2x = 30 ⇒ x = 30 / 2 ⇒ x = 15

   Reply