Capitulo 1 - Lógica y Conjuntos - Funciones - Ejercicio N° 166

166. En los siguientes ejercicios se dan varias relaciones de D a E. Para cada relación, identifique si se trata de una función o no.

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

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

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

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

e) D ={1, 2, 3, 4} E ={a, b, c, d, e} {(2, a), (1, b), (3, e), (4, c)}

f) D ={1, 2, 3, 4, 5} E ={a, b, c, d} {(1, a), (2, a), (3, d), (4, c), (5,b)} g) D ={1, 2, 3, 4, 5} E ={a, b, c, d} {(1, a), (3, b), (2, c), (4, d)} 

h) D ={1, 2, 3, 4, 5} E ={a, b, c, d} {(1, a), (2, b), (2, c), (3, d), (5, d)}

i) D ={1, 2, 3, 4} E ={a, b, c, d, e} {(1, a), (2, b), (3, c), (1, d), (4, e)} 

j) D ={1, 2, 3, 4} E ={a, b, c, d, e} {(1, b), (2, c), (3, d), (4, b)}

Solución :