Which of the following relations are functions form A = (1,3,5,7,9) to B = (1,2,3,4,5).
f= ((3,1), (5,1), (7,1), (9,1))

Let X = {1, 2, 3, 4} and Y = {1, 3, 5, 7,9} . Which of the following is relations from X to Y (i) R_(1) = {(x, y):y=2+x,x inX, yinY} (ii) R_(2) = {(1, 1), (2, 1), (3, 3), (4, 3), (5, 5)} (iii) R_(3) = {(1, 1), (1, 3), (3, 5), (3, 7), (5, 7)} (iv) R_(4) = {(1, 3), (2, 5), (2, 4), (7, 9)}

If A= [(3,1),(7,5)] , then A^(-1)= (1)/(8)[(5,-1),(-7,3)]

Which of the following relations are functions ? Give reasons. If it is a function, determine its domain and range. R = {(2, 1), (3, 1), (4, 2), (5, 7), (6, 9)}.

Which of the following relations are functions ? Give reasons. If it is a function, determine its domain and range. R = {(1, 3), (1, 5), (2, 5), (3, 6), (3, 7)}.

If A = {:[(4,2,3),(1,5,7)] and B = [(1,3,7),(0,4,1)] , find 2A + B.

If N_7 = {1,2,3,4,5,6,7}, does the following partition give rise to an equivalenc relation? Why? A _1 = (1,2,5,6), A _2 = {3}, A_3 = {4,6}

Let f= {(1, 5), (2, 6), (3, 4)} g = {(4, 7), (5,8), (6,9)}. Then gof is :

If A = {0, 1, 2, 3, 5,6}, B = {1,3, 5, 7, 9} and C = {0, 5, 10, 20,40}, find

Arrange the following in ascending and descending order: 1/(12),1/(23),1/5,1/7,1/(50),1/9,1/(17) .

If A = {:[(4,2,7),(2,1,7)] and B = [(2,1,5),(3,4,6)] find 2A-B.