Question

Dadas as funções F (x) = x2 + 1 e g(x) = -x + 8, obtenha :
a)F(g(1) b)G(f(2))​

Answer 1

Resposta:

f(x) = x² + 1 || g(x) = -x + 8

a)

f( g(x) ) = ( -x + 8 )² + 1

f( g(1) ) = ( -1 + 8 )² + 1

f( g(x) ) = 7² + 1

f( g(x) ) = = 49 + 1

f( g(x) ) = = 50

b)

g( f(x) ) = - ( x² + 1 ) + 8

g( f(2) ) = - ( 2² + 1 ) + 8

g( f(x) ) =  - ( 4 + 1) + 8

g( f(x) ) = - 5 + 8

g( f(x) ) =  3