1. Menghubungkan Setiap 1 anggota

Jawab: (i), (iii), (iv), (v)

2. e [(5.6).(6.7).(7,5);

d. ((1.1), (2, 2). (3.3);

f. ((a.2).(2, b). (b, a)}

ingat karena menghubungkan 1 setiap anggota nya kalau lebih bisa relasi, fungsi ataupun pemetaan.

3. A). Korespondensi satu²

n! = 6!

= 6.5.4.3.2

= 720

B).

1 = {(1, a), (2, b), (3, c), (4, d), (5, e), (6, f)}

2 = {(1, b), (2, a), (3, d), (4, c), (5, f), (6, e)}

3 = {(1, c), (2, d), (3, e), (4, f), (5, a),(6, b)}

4. Nomor empat

A. f:x → -x

-2 → f(-2) = - (-2) = 2

-1 → f(-1) = - (-1) = 1

0 → f(0) = - (0) = 0

1 → f(1) = -1

2 → f(2) = -2

B. f:x → x²

-2 → f(-2) = - (-2) = -2² = 4

-1 → f(-1) = - (-1) = -1² = 1

0 → f(0) = - (0) = 0² = 0

1 → f(1) = 1² = 1

2 → f(2) = 2² = 4

C. f(x) = 2x² - 1

-2 → f(-2) = - (-2) = 2(-2²) -1 = 7

-1 → f(-1) = - (-1) = 2(-1)² -1 = 1

0 → f(0) = - (0) = 2(0)² -1 = -1

1 → f(1) = 2(1)² -1 = 1

2 → f(2) = 2(2)² -1 = 7