$\text { Find the derivative of the function } f ( x ) = - 7 x ^ { 3 } + 4 x ^ { 2 } + 1 \text {. }$

question 1

Multiple Choice

$\text { Find the derivative of the function } f ( x ) = - 7 x ^ { 3 } + 4 x ^ { 2 } + 1 \text {. }$

• A) \(f ^ { t } ( x ) = - 14 x + 4 x ^ { 2 }\)
• B) \(f ^ { t} ( x ) = - 14 x ^ { 2 } + 4 x\)
• C) \(f ^ { t } ( x ) = - 7 x ^ { 2 } + 4 x ^ { 2 } + 1\)
• D) \(f ^ { t } ( x ) = - 21 x ^ { 2 } + 8 x + 1\)
• E) \(f ^ {t } ( x ) = - 21 x ^ { 2 } + 8 x\)

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