What is the time complexity of, f(n)= n+4

What is the time complexity of given function? 
f(n)=n+4.

Solution:

Given,

f(n)=n+4 

• n+4 >= n+4
• n+4 >= n, where n >= 1
• n+4 >= n, for all n>=1

f(n) >= n, for all n>=1

Compare with the standard Big omega notation equation that is,

f(n) >= c*g(n), for all n₀>=n

Here,

g(n) = n, 

c = 1

n0 = 1

• f(n)=Ω(g(n))
• f(n)=Ω(n)