Answer:
(g − f) ( 3 ) = 23
Explanation:
( g − f ) ( x ) = g ( x ) − f ( x )
= 6 x − ( 4 − x 2 )
= x 2 + 6 x − 4
to evaluate ( g - f ) ( 3 ) substitute x = 3 into ( g − f ) ( x )
( g − f ) = ( 3 ) 2 + ( 6 x 3 ) - 4 =23
For this case we have the following functions:
By definition we have to:
Then, we find
We evaluate the function in 3:
Now we find
We evaluate the function in 3
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