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5) Dada as funções: f(x ) = 7x + 2 e g( x ) = 5x +1, calcule:
a) gof( x ) b) fog( x ) c ) gof(1 ) d) fog( -1 )

 Apr 19, 2021
 #1
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Please use English

 Apr 19, 2021
 #2
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I think you mean

 

5) Given the functions: f (x) = 7x + 2 and g (x) = 5x +1, calculate:
a) g$\circ$f (x)

b) f$\circ$g (x)

c) g$\circ$f (1)

d) f$\circ$g (-1)

 

a) $g\circ{f(x)}=g(f(x))=g(7x+2)=\boxed{35x+11}$

 

b) $f\circ{g(x)}=f(g(x))=f(5x+1)=\boxed{35x+9}$

 

c) $35\cdot1+11=\boxed{46}$
 

d) $35\cdot(-1)+9=\boxed{-26}$

 Apr 19, 2021

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