QUESTION 18 a. Determine whether f is a bijection function. Briefly explain. f: ZR, f(x) = 3 3x.(R, Z set of real numbers and integers respectively) b. Redefine the domain and/or codomain of the function f: Z+R, f(x) = 2/x, so that f is a bijection. (R, Z are sets of Real Numbers and Integers respectively) Attach File Browse Local Files Browse Content Collection QUESTION 19 a. Let Qo = 1, Q1 = 1, and an = an- 1 + 2an-2, Give the first five terms of the sequence. b. Define the following sequence recursively. Include the initial condition and assume the sequence begin with aj. an = n! c. Define sequence recursively. Include the initial condition and assume the sequence begin with Qy. 0.1, 0.11, 0.111, 0.1111, 0.11111,.... Attach File Browse Local Files Browse Content Collection