a) Is function g defined by g = {(-1 , 2),(0 , 4),(2 , -4),(5 , 6),(10 , 0)}, a one to one function?
b) State whether the given function is on-to or not. f : R -> R defined by f(x) = 1 + x2.
c) Let A = {3, 4, 5} and B= {6, 7, 8, 9} and R = {(3, 6) (4, 7) (5, 8)}. Find out if R is a mapping from A to B.
d) The following sets have been defined using the | notation. Re-write them by listing some of the elements.
i. {x | x = 2n - 5, x and n are natural numbers}
ii. {y | 2y2 = 50, y is an integer}
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