Question

VALENDO 20 PONTOS 10. A função f(x) = 2 – I – 3x + 3I, calcule: f(– 3), f(0), e f(1) e indique, respectivamente, a alternativa correta: a) 14; 1 e 0. b) – 10; 1 e 0. c) – 10; – 1 e 2. d) 10; 1 e 8.

Answer 1

Explicação passo-a-passo:

$\sf f(x)=2-|-3x+3|$

• $\sf f(-3)=2-|-3\cdot(-3)+3|$

$\sf f(-3)=2-|9+3|$

$\sf f(-3)=2-|12|$

$\sf f(-3)=2-12$

$\sf f(-3)=-10$

• $\sf f(0)=2-|-3\cdot0+3|$

$\sf f(0)=2-|0+3|$

$\sf f(0)=2-|3|$

$\sf f(0)=2-3$

$\sf f(0)=-1$

• $\sf f(1)=2-|-3\cdot1+3|$

$\sf f(1)=2-|-3+3|$

$\sf f(1)=2-|0|$

$\sf f(1)=2-0$

$\sf f(1)=2$

Letra C