f(x)= -2x^3 + 5x^2 -3x +1
Is f(x) increasing or decreasing when x=-2???
I think its increasing?
also does the f ' (x) and f '' (x) tell you the same thing about cubic fuctions than quadratic functions?
I think the f ' (x) tells me the gradient of the tangent line and f''(x) tells if the turning point is max or min??