Find the x-coordinates of all points on the curve at which the tangent line is horizontal.

I don't know what to do and where to begin. :confused:

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- October 23rd 2007, 03:58 PMFalconPUNCH!X-Coordinates on Tangent Line
Find the x-coordinates of all points on the curve at which the tangent line is horizontal.

I don't know what to do and where to begin. :confused: - October 23rd 2007, 04:08 PMJhevon
- October 23rd 2007, 04:10 PMFalconPUNCH!
- October 23rd 2007, 04:16 PMFalconPUNCH!
I got as the derivative and I pretty much don't know how to solve it for x.

- October 23rd 2007, 04:19 PMJhevon
- October 23rd 2007, 04:21 PMFalconPUNCH!
- October 23rd 2007, 04:32 PMJhevon
- October 23rd 2007, 04:37 PMFalconPUNCH!
- October 23rd 2007, 04:39 PMJhevon
- October 23rd 2007, 04:46 PMFalconPUNCH!
- October 23rd 2007, 05:04 PMJhevon
- October 23rd 2007, 05:05 PMFalconPUNCH!
- October 23rd 2007, 05:07 PMJhevon
- October 23rd 2007, 05:14 PMFalconPUNCH!
- October 23rd 2007, 05:22 PMJhevon