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May 15th, 2008, 06:54 AM
|  | Bar0n | | Join Date: Apr 2007 Location: South African Republic
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| | Density Functions I've asked this before in a previous post, however, while not quite necessary then, the answer did not include full workings, and I think I sort of need that just now to make sure I understand this.
I'm writing another semester test tomorrow, so I would appreciate if someone could show me how this is done.
(Not sure whether it would be classified as "bumping" to bring up the old topic again, I decided to just as well post it in a new thread. Please show full workings.)
Thanks in advance guys
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May 15th, 2008, 07:23 AM
|  | Flow Master | | Join Date: Dec 2007 Location: Zeitgeist
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| | Quote:
Originally Posted by janvdl I've asked this before in a previous post, however, while not quite necessary then, the answer did not include full workings, and I think I sort of need that just now to make sure I understand this.
I'm writing another semester test tomorrow, so I would appreciate if someone could show me how this is done.
(Not sure whether it would be classified as "bumping" to bring up the old topic again, I decided to just as well post it in a new thread. Please show full workings.)
Thanks in advance guys  | Let  .
Therefore  ,
where the Fundamental Theorem of Calculus and the chain rule have been used to get the derivative  ,
and f(x) = 0 for x < 0.  so I don't think I've slipped up anywhere here .......
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Last edited by mr fantastic; May 15th, 2008 at 07:44 AM.
Reason: Had sd = 1 instead of sigma.
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May 15th, 2008, 07:25 AM
|  | Bar0n | | Join Date: Apr 2007 Location: South African Republic
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| | Quote:
Originally Posted by mr fantastic Let  .
Therefore  , 
where the Fundamental Theorem of Calculus and the chain rule have been used to get the derivative  ,
and f(x) = 0 for x < 0. | Thank you Mr F, I will work through this now and try to understand
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