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Given the functions #F(x)=x+4# and #G(x)=2x^2+4# what is f(g(x))?

Answer 1

To find ( f(g(x)) ), you first need to find the expression for ( g(x) ), and then substitute it into ( f(x) ) wherever you see ( x ).

Given ( g(x) = 2x^2 + 4 ) and ( f(x) = x + 4 ), substitute ( g(x) ) into ( f(x) ):

[ f(g(x)) = f(2x^2 + 4) ]

Now, replace ( x ) in ( f(x) ) with ( 2x^2 + 4 ):

[ f(g(x)) = (2x^2 + 4) + 4 ]

[ f(g(x)) = 2x^2 + 8 ]

So, ( f(g(x)) = 2x^2 + 8 ).

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Answer 2

Madelyn Anderson

#f(g(x)=2x^2+8#

Given - #F(x)=x+4# #G(x)=2x^2+4# #f(g(x)=(2x^2+4)+4# #f(g(x)=2x^2+4+4# #f(g(x)=2x^2+8#

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.