55. let p= {a = xo, x xn =b} bc a parttion ot la, b] and m, and m be the supremum and intimum o1j in ax. then is called the upper sum offto the partition ofp. (

55. Let P= {a = Xo, X Xn =b} bc a parttion ot la, b] and M, and m be the supremum and intimum o1j in Ax. Then is called the upper sum offto the partition ofP. (A) M,Ar (B) m,Ax, (C) mM,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 S7. The set of points {xo, X1,.. n With 0 = Xo S X S.S Xn-1 S X 15 a partition of the interval (A) [0.5, 1] (B) [0, 1.5] (C) H, 0] (D) [0, 1] 58. Let Pta= X0,X1,*b} be a partition of [a, b] and M; and m; be the supremum and infimum of f in Ax. Then is called the lower sum offto the partition of P. (A) M,Ax, (B) m,Ax, (C) mM,A (D) None of these