8 A curve \(y = \mathrm { f } ( x )\) has a stationary point at \(( 3,7 )\) and is such that \(\mathrm { f } ^ { \prime \prime } ( x ) = 36 x ^ { - 3 }\).
- State, with a reason, whether this stationary point is a maximum or a minimum.
- Find \(\mathrm { f } ^ { \prime } ( x )\) and \(\mathrm { f } ( x )\).