equals
e
e2
e3
e5
C.
e3
If f(x) = 2x4 - 13x2 + ax + b is divisible by x2 - 3x + 2, then (a, b) is equal to
(- 9, - 2)
(6, 4)
(9, 2)
(2, 9)
Let A and B be two symmetric matrices of same order. Then, the matrix AB - BA is
a symmetnc matrix
a skew-symmetric matrix
a null matrix
the identity matrix