# S.O.S. Mathematics CyberBoard

Your Resource for mathematics help on the web!
 It is currently Thu, 23 May 2013 00:02:09 UTC

 All times are UTC [ DST ]

 Page 1 of 1 [ 3 posts ]
 Print view Previous topic | Next topic
Author Message
 Post subject: Distribution questionsPosted: Wed, 15 Jul 2009 16:26:48 UTC
 Senior Member

Joined: Wed, 29 Dec 2004 21:23:09 UTC
Posts: 120
Hi, have two questions

I wanna calculate where is a function of x and
is the dirac function. is a testfunction

Im not really sure how to proceed from here, should I use partial integration? Ive tried it but not sure.

Next question

I want to derivate as a distribution

Then I simply put in the values of and I get

where H is the heavieside function

But the answer says 2H - 1

Top

 Post subject: Posted: Wed, 15 Jul 2009 17:01:01 UTC
 Senior Member

Joined: Wed, 29 Dec 2004 21:23:09 UTC
Posts: 120
Question 1 solved

Top

 Post subject: Re: Distribution questionsPosted: Mon, 24 Aug 2009 16:56:44 UTC
 S.O.S. Newbie

Joined: Mon, 24 Aug 2009 11:40:23 UTC
Posts: 3
ej wrote:
Hi, have two questions

I wanna calculate where is a function of x and
is the dirac function. is a testfunction

Im not really sure how to proceed from here, should I use partial integration? Ive tried it but not sure.

Next question

I want to derivate as a distribution

Then I simply put in the values of and I get

where H is the heavieside function

But the answer says 2H - 1

for the second part.

see carefully what is the value of .. this integral is same as and not as you are claiming. in fact you have done all the work ... just you have to look carefully.

Top

 Display posts from previous: All posts1 day7 days2 weeks1 month3 months6 months1 year Sort by AuthorPost timeSubject AscendingDescending
 Page 1 of 1 [ 3 posts ]

 All times are UTC [ DST ]

#### Who is online

Users browsing this forum: No registered users

 You cannot post new topics in this forumYou cannot reply to topics in this forumYou cannot edit your posts in this forumYou cannot delete your posts in this forum

Search for:
 Jump to:  Select a forum ------------------ High School and College Mathematics    Algebra    Geometry and Trigonometry    Calculus    Matrix Algebra    Differential Equations    Probability and Statistics    Proposed Problems Applications    Physics, Chemistry, Engineering, etc.    Computer Science    Math for Business and Economics Advanced Mathematics    Foundations    Algebra and Number Theory    Analysis and Topology    Applied Mathematics    Other Topics in Advanced Mathematics Other Topics    Administrator Announcements    Comments and Suggestions for S.O.S. Math    Posting Math Formulas with LaTeX    Miscellaneous