Use the Quadratic Function to Determine If the Function Has $$f ( x ) = 4 x ^ { 2 } + 8 x$$

Multiple Choice

Use the quadratic function to determine if the function has a maximum or minimum value and then find this maximum or minimum value.
- $$f ( x ) = 4 x ^ { 2 } + 8 x$$

A) minimum at $( - 1 , - 4 )$
B) maximum at $( 1 , - 4 )$
C) minimum; (ii) $( 1 , - 4 )$
D) maximum at $( - 1 , - 4 )$