Question

Dada a função f: ℜ → ℜ, definida por f(x) = 2x – 1\3 (um terço), calcular:

a) f(0)
b) f(-2)

com o cálculo, por favor,

Answer 1

$f:\mathbb{R}\rightarrow\,\mathbb{R}\,definida\,por \\ f(x)=2x-\dfrac{1}{3}$

a)

$\boxed{\boxed{\mathsf{f(0)=2.0-\dfrac{1}{3}=-\dfrac{1}{3}}}}$

b)

$\boxed{\boxed{\mathsf{f(-2)=2.2-\dfrac{1}{3}=4-\dfrac{1}{3}=\dfrac{11}{3}}}}$