Using the graph of f left parenthesis x right parenthesis equals short dash 1 half x cubed, estimate the derivative of f left parenthesis x right parenthesis when x equals 2. 6 1 over 6 short dash 6 short dash 1 over 6

y 6 5 4 3 2 1 -6 -5 -4 -3 -2 -1 0 2 3 4 5 6 X -1 -2 -3 -4 5 -6