55. let p=fa = xo, x1, xn =b} de a partition of [a, b] and m, and m; be the supremum and infimum otj in ax then is called the upper sum offto the partition of p

55. Let P=fa = Xo, X1, Xn =b} De a partition of [a, b] and M, and m; be the supremum and infimum otj in Ax Then IS called the upper sum offto the partition of P. (A) M,Ax, (B) 2m,Ax (C)2 m,M,Ar; (D) None of these 56. Which of the following is a partition of the interval [0, 4]? (A) {0,2, 1, 4} (B) {0, 1, 2, 3, 4) (C) {0,2, 4, 3} (D) None of these 57. The set of points {x0, X1,.., Xn}with 0 = Xo Sx S.... Sxn-] S x, = 1 1S a partition of the interval (A) [0.5, 1] (B) [0, 1.5] (C)1,0 D) [0, 1] 58. Let P= {a X0,X13, Xnb} be a partition of [a, b] and M; and m; be the supremum and infimum off in Ax Then is called the lower sum off to the partition of P. (A) M,Ax (B) 2 m,Ar, (C) m,M,Ax (D) None of these XEH-3)-MAT(5) (14)