$$\text { Find the value of } \mathrm { df } ^ { - 1 } / \mathrm { dx } \text { at } x = f ( a ) \text {. }$$
-$$f ( x ) = x ^ { 3 } - 6 x ^ { 2 } - 5 , x \geq 4 , a = 2$$
A) $- \frac { 1 } { 21 }$
B) $- \frac { 1 } { 5 }$
C) $- 12$
D) $- \frac { 1 } { 12 }$

Question

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The Answer of $$\text { Find the value of } \mathrm { df } ^ { - 1 } / \mathrm { dx } \text { at } x = f ( a ) \text {. }$$
-$$f ( x ) = x ^ { 3 } - 6 x ^ { 2 } - 5 , x \geq 4 , a = 2$$
A) $- \frac { 1 } { 21 }$
B) $- \frac { 1 } { 5 }$
C) $- 12$
D) $- \frac { 1 } { 12 }$

Find the value of df−1/dx at x=f(a). \text { Find the value of } \mathrm { df } ^ { - 1 } / \mathrm { dx } \text { at } x = f ( a ) \text {. } Find the value of df−1/dx at x=f(a).

$\text { Find the value of } \mathrm { df } ^ { - 1 } / \mathrm { dx } \text { at } x = f ( a ) \text {. }$