Question

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Answer 1

Explicação passo-a-passo:

a)g(f(2))=

f(2)=2^2-1

f(2)=4-1

f(2)=3

g(3)=2.3+1

g(3)=6+1=7

logo g(f(2))=7

b)f(g(2))=

g(2)=2.2+1

g(2)=5

f(5)=5^2-1

f(5)=25-1

f(5)=24

logo f(g(2))=24

c)f(f(1))=

f(1)=1^2-1

f(1)=0

f(0)=0^2-1

f(0)=-1

logo f(f(1))=-1

d)g(g(-3))=

g(-3)=2.(-3)+1

g(-3)=-6+1

g(-3)=-5

g(-5)=2.(-5)+1

g(-5)=-10+1

g(-5)=-9

logo g(g(-3))=-9