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Question

For the real-valued functions =

f(x)=x^2+5 and g(x)=√x+2, find the composition f o g and specify its domain using interval notation.


(f o g)(x)=

Domain of f o g =

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fog_1.jpg

O
The
f (21 ) = 212 + 5 , 9 ( " ) = Ja + 2
composition function fog
is defined as
of ( a(xx ) ) .
fog = f ( 9 ( xx ) )
Now .
if ( 21 ) = 212+ 5
= f ( JX + 2 )
(": 8( x) = JX +27
. '. f (...

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