Question

calcule
f(X)= 5-4x,   a=1/2

Answer 1

Se a= 1/2 for o valor de x, então:
f(1/2)= 5 - 4 . 1/2= 
f(1/2)= 5 - 4/2=
f(1/2)= 6/2=
f(1/2) = 3