vaguely, like its the x intercepts of the derivatives. but i am unable to get it because i get to a point where i cube root a negative( which to my knowledge is not possible)What do you understand by "critical points"?
That's your problem! With mathematics you can't be "vague". Definitions in mathematics (and the sciences in general) are "working definitions"- you use the precise words in problems and calculations.vaguely, like its the x intercepts of the derivatives. but i am unable to get it because i get to a point where i cube root a negative( which to my knowledge is not possible)
Yes, I mistakenly set x= -1 in the formula for f' rathe than f.The critical point is (-1, -3) not (-1, 0), isn't it?
I thought so. A common mistake!Yes, I mistakenly set x= -1 in the formula for f' rathe than f.