Find $f \circ g$.
$f ( x ) = x + 3 \quad g ( x ) = \frac { 4 } { x ^ { 2 } - 9 }$

A) $( f \circ g ) ( x ) = \frac { 4 } { x ^ { 2 } }$

B) $( f \circ g ) ( x ) = \frac { 4 } { x ^ { 2 } + 6 x }$

C) $( f \circ g ) ( x ) = \frac { 3 x ^ { 2 } + 1 } { x ^ {
2 } - 9 }$

D) $( f \circ g ) ( x ) = \frac { 7 } { x ^ { 2 } - 9 }$

E) $( f \circ g ) ( x ) = \frac { 3 x ^ { 2 } - 23 } { x ^ { 2 } - 9 }$

Question

Find $f \circ g$.
$f ( x ) = x + 3 \quad g ( x ) = \frac { 4 } { x ^ { 2 } - 9 }$

A) $( f \circ g ) ( x ) = \frac { 4 } { x ^ { 2 } }$

B) $( f \circ g ) ( x ) = \frac { 4 } { x ^ { 2 } + 6 x }$

C) $( f \circ g ) ( x ) = \frac { 3 x ^ { 2 } + 1 } { x ^ { 
2 } - 9 }$

D) $( f \circ g ) ( x ) = \frac { 7 } { x ^ { 2 } - 9 }$

E) $( f \circ g ) ( x ) = \frac { 3 x ^ { 2 } - 23 } { x ^ { 2 } - 9 }$

Quizplus · Accepted Answer

The Answer of Find $f \circ g$.
$f ( x ) = x + 3 \quad g ( x ) = \frac { 4 } { x ^ { 2 } - 9 }$

A) $( f \circ g ) ( x ) = \frac { 4 } { x ^ { 2 } }$

B) $( f \circ g ) ( x ) = \frac { 4 } { x ^ { 2 } + 6 x }$

C) $( f \circ g ) ( x ) = \frac { 3 x ^ { 2 } + 1 } { x ^ { 
2 } - 9 }$

D) $( f \circ g ) ( x ) = \frac { 7 } { x ^ { 2 } - 9 }$

E) $( f \circ g ) ( x ) = \frac { 3 x ^ { 2 } - 23 } { x ^ { 2 } - 9 }$

Find f∘gf \circ gf∘g f(x)=x+3g(x)=4x2−9f ( x ) = x + 3 \quad g ( x ) = \frac { 4 } { x ^ { 2 } - 9 }f(x)=x+3g(x)=x2−94​