$\text { Find the derivative of the function } f ( x ) = 9 \sqrt { x } \sin ( x ) \text {. }$

question 108

Multiple Choice

$\text { Find the derivative of the function } f ( x ) = 9 \sqrt { x } \sin ( x ) \text {. }$

• A) \(\frac { 9 } { 2 } \sqrt { x } \sin ( x ) + 9 \sqrt { x } \cos ( x )\)
• B) \(\frac { 9 } { 2 \sqrt { x } } \sin ( x ) + 9 \sqrt { x } \cos ( x )\)
• C) \(\frac { 9 } { 2 \sqrt { x } } \cos ( x )\)
• D) \(\frac { - 9 } { 2 \sqrt { x } } \sin ( x ) + 9 \sqrt { x } \cos ( x )\)
• E) \(\frac { 9 } { 2 \sqrt { x } } \sin ( x ) - 9 \sqrt { x } \cos ( x )\)

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