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1. Considere as funções f e g, ambas com domínio Z, dadas por f(x) = x²- 2x e g(x) = x³-1. Associe as colunas e assinale a alternativa que apresenta a sequência correta: * 1 ponto Imagem sem legenda a) C, D, A, B b) A, B, D, C c) D, C, A, B d) A, C, D, B

2 Answers

5 votes

Answer:

letra A confia

Explanation:

User Muzammil
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2 votes

Answer:

(A)C,D,A,B

Explanation:


f(x) = x^2- 2x\\g(x) = x^3-1

a) f(-2)


f(-2) = (-2)^2- 2(-2)\\=4-(-4)\\=4+4\\=8$ (C)

b) g(-2)


g(-2) = (-2)^3-1\\\=-8-1\\=-9 $(D)

c) f(-1)+g(3)


f(-1) = (-1)^2- 2(-1)=1+2=3\\g(3) = (3)^3-1=27-1=26\\f(-1) + g(3)=3+26\\=29$ (A)

d) f(5) : g(2)


f(5) = (5)^2- 2(5)=25-10=15\\g(2) = (2)^3-1=8-1=7\\f(5) :g(2)=15/7$ (B)

User Daniel Huckson
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