aydrian7020 aydrian7020
  • 19-01-2018
  • Mathematics
contestada

Determine whether the function f : z × z → z is onto if
a.f (m, n) = m + n.
b.f (m, n) = m2 + n2.
c.f (m, n) = m.
d.f (m, n) = |n|.
e.f (m, n) = m − n

Respuesta :

LammettHash
LammettHash LammettHash
  • 19-01-2018
Assuming "z" is [tex]\mathbb Z[/tex], the set of integers:

a. yes
b. no; [tex]m^2+n^2[/tex] will always be a non-negative integer
c. yes
d. no; same reason as (b)
e. yes
Answer Link

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