Diketahui f(x) = {(1,3),(2,2), (3,1),(4,0)} dan g(x) ={(0,-1),(1,1),(2,3),(3,5)}. Tentukan A. (f+g) (x) B. (f.g)(x)

Diket :
f(x) = {(1,3),(2,2),(3,1),(4,0)}
g(x) = {(0,1),(1,1),(2,3),(3,5)}

dit:
a. (f+g) (x)
b. (f.g)(x)

jawab:
a. (f+g)(x)
= {(1,3+1),(2,2+3),(3,1+5)}
= {(1,4),(2,5),(3,6)}

b. (f.g)(x)
= {(1,3.1),(2,2.3),(3,1.5)}
= {(1,3),(2,6),(3,5)}