Tính f ′′ ( 2 ) .
Giải thích
C
\(f\left( x \right) = \,{\left( {3x - 7} \right)^5}\)
\(f'\left( x \right)\,\, = \,15{\left( {3x - 7} \right)^4}\).
\(f''\left( x \right) = \,\,180\,{\left( {3x - 7} \right)^3}\).
Vậy \(f''\left( 2 \right)\, = \,\, - 180\).