please tolong dijawab

Jawab :

11) 

domain : { 1 , 2 , 3 , 4}
f(x) = x² - 3

f(1) = (1 - 3)(1 + 3) 
      = -2(4)
      = -8
f(2) = (2 - 3)(2 + 3)
      = -1(5)
      = -5
f(3) = (3 - 3)(3 + 3)
      = 0(6)
      = 0
f(4) = (4 - 3)(4 + 3)
      = 1(7)
      = 7

Range : {-8, -5, 0, 7}

12. p = { faktor 10 }
         = { 1, 2, 5, 10}
         = 4
Q = {a, b, c}
    = 3

pemetaan p ke q
= 4³
= 81