Question: xe 3Please I need help for 7 and 8 (i) AOB 6) Let A, B. C be sets. Prove that (A - C) n (C

xe 3Please I need help for 7 and 8

(i) AOB 6) Let A, B. C be sets. Prove that (A - C) n (C - B) = 4. 7) Answer the following (a) Define function (b) Define one-to-one function (c) Define onto function. (d) Determine whether f is a function (explain your determination): f : R - R. f(x) = x - 2 x +5 8) Consider the following function The function that assigns to each bit-string the number of Os minus the number of Is. (a) Is the function f one-to-one ? (b) Is the function f onto ? (c) What is the domain of f? (d) What is the range of f? 9) Evaluate the following

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