D darkphoenix Member Joined Mar 2, 2011 Messages 60 Gender Male HSC 2012 Jan 6, 2012 #1 Can anyone show me how to graph y=(2x^3)/(x^2-4) , i got 3 turning points 0, +- root 12, but the answer is +-2.16. Ty
Can anyone show me how to graph y=(2x^3)/(x^2-4) , i got 3 turning points 0, +- root 12, but the answer is +-2.16. Ty
T tywebb dangerman Joined Dec 7, 2003 Messages 2,202 Gender Undisclosed HSC N/A Jan 6, 2012 #2 So I think you are right. Where did you get this question from? It seems that "the answer" you have been provided with is incorrect. Last edited: Jan 6, 2012
So I think you are right. Where did you get this question from? It seems that "the answer" you have been provided with is incorrect.
D darkphoenix Member Joined Mar 2, 2011 Messages 60 Gender Male HSC 2012 Jan 6, 2012 #3 math in focus , EX 2.8 Q 13 , I thought my answer is right until i used a graphing calculator and had the same answer as the textbook.
math in focus , EX 2.8 Q 13 , I thought my answer is right until i used a graphing calculator and had the same answer as the textbook.
T tywebb dangerman Joined Dec 7, 2003 Messages 2,202 Gender Undisclosed HSC N/A Jan 6, 2012 #4 Here's what wolframalpha.com did:
T tywebb dangerman Joined Dec 7, 2003 Messages 2,202 Gender Undisclosed HSC N/A Jan 6, 2012 #5 darkphoenix said: i got 3 turning points 0, +- root 12 Click to expand... Note that (0,0) is not actually a turning point. It's a horizontal point of inflection. Turning points are local extrema, not horizontal inflections. Stationary points can be local extrema OR horizontal points of inflection.
darkphoenix said: i got 3 turning points 0, +- root 12 Click to expand... Note that (0,0) is not actually a turning point. It's a horizontal point of inflection. Turning points are local extrema, not horizontal inflections. Stationary points can be local extrema OR horizontal points of inflection.
D darkphoenix Member Joined Mar 2, 2011 Messages 60 Gender Male HSC 2012 Jan 6, 2012 #6 O right, thanks, do you follow any steps when graphing: like limit to the asymptotes, even or odd, dividing regions etc. I get really confused when graphing these stuff?
O right, thanks, do you follow any steps when graphing: like limit to the asymptotes, even or odd, dividing regions etc. I get really confused when graphing these stuff?