For what values of x does the graph of f (x) have a horizontal tangent? (Round the answers to three decimal places.)
f (x) = 2x^3 + 6x^2 + 2 x + 9
horizontal tangent has a zero slope
so would i differentiate it before i set the equation =0?
For what values of x does the graph of f (x) have a horizontal tangent? (Round the answers to three decimal places.)
f (x) = 2x^3 + 6x^2 + 2 x + 9
horizontal tangent has a zero slope
so would i differentiate it before i set the equation =0?