Differentiate $\frac { 2 x - \left( x ^ { 2 } + 1 \right) ^ { 7 } } { 3 }$

question 35

Multiple Choice

Differentiate.
-f(x) = $\frac { 2 x - \left( x ^ { 2 } + 1 \right) ^ { 7 } } { 3 }$

• A) f'(x) = \(f ^ { \prime } ( x ) = 2 - 7 \left( x ^ { 2 } + 1 \right) ^ { 6 }\)
• B) f'(x) = \(\frac { 2 } { 3 }\) - \(\frac { 14 } { 3 }\) x( \(x ^ { 2 }\) + 1 \()^6\)
• C) f'(x) = \(\frac { 2 - x } { 3 \left( x ^ { 2 } + 1 \right) ^ { 6 } }\)
• D) none of these

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