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

question 9

Multiple Choice

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

• A)\(-\frac { 1 } { | 9 x | \sqrt { 81 x ^ { 2 } - 1 } }\)
• B)\( \frac { 1 } { | x | \sqrt { 81 x ^ { 2 } - 1 } }\)
• C)\(\frac { 1 } { | 9 x | \sqrt { 81 x ^ { 2 } - 1 } }\)
• D)\(\frac { 1 } { \sqrt { 81 x ^ { 2 } + 1 } }\)
• E)\(- \frac { 1 } { | x | \sqrt { 81 x ^ { 2 } - 1 } }\)

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