Question

Dada a função afim f(x) = 2x + 3, determine os valores de x para que:
a) f(x) = 1
b) f(x) = 0
c) f(x) = 6

Answer 1

Resposta:

$f(x)=2x+3$

a) $f(x)=1$

$2x+3=1\\2x=1-3\\2x=-2\\x=-2\div2=-1$

b) $f(x)=0$

$2x+3=0\\2x=-3\\x=-3\div2=-1.5$

c) $f(x)=6$

$2x+3=6\\2x=6-3\\2x=3\\x=3\div2=1.5$