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Find the Derivative of the Function f(x)=2xx2+9f ( x ) = \frac { 2 \sqrt { x } } { x ^ { 2 } + 9 }

Question 127

Multiple Choice

Find the derivative of the function.
f(x) =2xx2+9f ( x ) = \frac { 2 \sqrt { x } } { x ^ { 2 } + 9 }


A)
3x2+9x(x2+9) 2\frac { - 3 x ^ { 2 } + 9 } { \sqrt { x } \left( x ^ { 2 } + 9 \right) ^ { 2 } }
B)
12xx(x2+9) \frac { 1 } { 2 x \sqrt { x } \left( x ^ { 2 } + 9 \right) }
C) 12xx\frac { 1 } { 2 x \sqrt { x } }
D) 3x2+9x(x2+9) \frac { - 3 x ^ { 2 } + 9 } { \sqrt { x } \left( x ^ { 2 } + 9 \right) }

Correct Answer:

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