# Find x co-ordinates of the turning points of a function

1. Aug 22, 2011

### druuuuuuuunnk

Hi!!

Find the x co-ordinates of the turning points of a function

Y=2x^3+36x-1

Determine the nature of the turning points.

I've been reading up on differentiation, I understand but I'm unsure what to do here. If someone could give me some helpful steps so I could learn to do this for my exam tomorrow I'd be grateful

Thanks

2. Aug 22, 2011

### gb7nash

You tell me. What is the slope of a turning point of the graph?

3. Aug 22, 2011

### druuuuuuuunnk

Its the gradient? Its the solution of to find x that I'm confused about. Do I differentiate it to simply it? Is that the answer the questions for or what else should I be looking at to solve it.

4. Aug 22, 2011

### Staff: Mentor

Start by answering gb7nash's question, then we can go from there.

5. Aug 22, 2011

### PAllen

- what characterized a turning point?
- what determines whether it is min, max or saddle point?

Really, if someone does any more for you, they're just doing your work.

6. Aug 22, 2011

### druuuuuuuunnk

Ok thanks, I look those things up. I appreciate the help.