Question

considerando a funcao f, dada f (x) = -3x + 1. a) x para f (x) = 0 b) f (raiz de 2) c) x para f (x) = 19

Answer 1

a) -3x+1 = 0
-3x=-1
3x=1
x=1/3

b) -3x+1 =
-3√2+1

c) -3x+1
-3x+1=19
-3x=19-1
3x=-18
x=-18/3
x=-6