Question

sendo f:N dada por f(x) = 2x + (-1) calcule:
a) f(2)

Answer 1

F(2)=2(2)-1 -> 4-1-> 3

Answer 2

f(x)=2x - 1
f(1)=2x1 - 1 =1
Assim,
f(2)= 2x2 - 1= 3