Haven't you a definition of "symmetric"?
hi i just wanted a quick explanation of what a symmetric matrix is and what they mean by the quadratic form by the standard basis?
(1)
for example why is this a symmetric matrix
[1 3]
[3 2]
and what is the quadratic form of the matrix by the standard basis?
(2)
also how would i go about figuring out the quadratic form corresponding to the matrix by the standard basis for
[ 0 1 1]
[ 1 3 5]
[ 1 5 0]