Suppose that f left-parenthesis x right-parenthesis equals startfraction x over 8 endfraction for 3 ⁢ less-than x ⁢ less-than 5. determine the mean and variance of x. round your answers to 4 decimal places. statistical tables and charts collapse question part part 1 upper e left-parenthesis upper x right-parenthesis equals

i think it because equal matrices have equal dimensions, only square matrices can be symmetric. for all indices and . every square diagonal matrix is symmetric, since all off-diagonal elements are zero. in linear algebra, a real symmetric matrix represents a self-adjoint operator over a real inner product space.

option number c is the right answer.