Question

a função definida por f(x) = 2x + 1 calcule f(0)

Answer 1

f(x)= 2x+1

f(0) = 2.0 + 1
f(0) = 0+ 1
f(0) = 1 

Answer 2

f(x)=2x+1    
f(0)=2*0+1=1

R: f(0)=1