Diketahui fungsi f= {(a,p),(b,r),(c,r),(d,p)} dan fungsi g={(p,1),(q,1),(r,3),(s,3)} Fungsi g o f = .....

jawab 

go f (x) = g { f(x)}

f(x) ..........g(x)  .....gof(x)
a --> p ....p--> 1  --> (a, 1)
b --> r......r --> 3 -->  (b. 3)
c--> r ......r --> 3 --> (c, 3)
d --> p....p --> 1 --> (d, 1)


gof (x) = { (a, 1), (b, 3), (c, -3), (d, 1)}