tolong dibantuuuu:)))

A= {3,4,5,6,7,8,9}
B={bil. real}
Domain : A={3,4,5,6,7,8,9)
Kodomain: B={bil. real}
Range : 
f(3) = 5
f(4) = 3
f(5) = 7
f(6) = 4
f(7) = 9
f(8) = 5
f(9) = 11
Range: R={3,4,5,7,9,11}

A = {3, 4, 5, 6, 7, 8, 9}
x = 3 ⇒ f(3) = 3 + 2 = 5
x = 4 ⇒ f(4) = 4/2 + 1 = 3
x = 5 ⇒ f(5) = 5 + 2 = 7
x = 6 ⇒ f(6) = 6/2 + 1 = 4
x = 7 ⇒ f(7) = 7 + 2 = 9
x = 8 ⇒ f(8) = 8/2 + 1 = 5
x = 9 ⇒ f(9) = 9 + 2 = 11
Domain: {3, 4, 5, 6, 7, 8, 9}
Kodomain: Bil Real
Range: {(3,5),(4,3),(5,7),(6,4),(7,9),(8,5),(9,11)}