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![[parent]](http://images.planetmath.org:8080/images/uparrow.png) Viewing Correction to 'catenary'
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missing dt by Looxix
Correction id: 7076
Filed on: 2005-09-14 16:31:55
Status: Accepted on 2005-09-15 06:23:21
Type: Erratum
Correction text:
A small details but a "dt" is missing whe deriving dy' from y' := \sinh{t}.
The line:
$$y' := \sinh{t}, \quad dy' = \cosh{t}, \quad \sqrt{1+y'^2} = \cosh{t}$$
should be changed to:
$$y' := \sinh{t}, \quad dy' = \cosh{t}\,dt ... |
Comment from object owner pahio:
You are right, thanks!
Jussi |
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