Match the following {:("(A) The minimum value of "(x^(2)+2x+4)/(x+2)" is", "(P) "0),("(B) Let A and B be 3 × 3 matrices of real" , "(Q) " 1) ,(" numbers, where A is symmetric, B is" ,),(" skew-symmetric, and "(A + B) (A – B),),( = (A – B) (A + B)". If "(AB)^(t)= (–1)^(k) AB",",),(" where "(AB)^(t)" is the transpose of the matrix",),(" AB, then the possible values of k are",),("(C) Let " a=log_(3)log_(3)2." An integer k", "(R) " 2), ("satisfying " 1 lt 2^((-k+3^(-a)))lt 2", must be",),("(D) If "sin theta=cos phi", then the possible", "(S) " 3),("values of " (1)/(pi)(theta pm phi - (pi)/(2)) " are",):}
