Question

Dada a função f: R → R definida por f(x) = 3x + 1, calcule: a) f(−2) = b) f(0) = c) f(4) = d) f(−10)

Answer 1

$\frak{a)}~\sf{f(-2)=3\cdot(-2)+1=-6+1=-5}\\\frak{b)} ~\sf{f(0)=3\cdot0+1=1}\\\frak{c)}~\sf{f(4)=3\cdot4+1=12+1=13}\\\frak{d)}~\sf{f(-10)=3\cdot(-10)+1=-30+1=-29}$