$$\text { Find the value of } ( f \circ g ) ^ { \prime } \text { at the given value of } x \text {. }$$

question 278

Multiple Choice

$$\text { Find the value of } ( f \circ g ) ^ { \prime } \text { at the given value of } x \text {. }$$
- $$f ( u ) = \frac { 1 } { u } + 19 , u = g ( x ) = \frac { 1 } { x ^ { 2 } - 19 } , x = 10$$

• A) 10
• B) 20
• C) -39
• D) 100

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