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# Forum: Mathematics and Physics

From time to time everyone is faced with these problems.

1. ### Closed: Simple MathCAD problem

• Replies: 6
• Views: 23,195
29th July 2009, 14:21
2. ### Closed: what is the tail probability?

• Replies: 3
• Views: 21,383
13th April 2009, 04:15
3. ### Closed: How to convert 19.78 dbW to WATT?

• Replies: 4
• Views: 21,336
8th June 2008, 11:08
4. ### Closed: College Physics, Sixth Edition, Serway, Solutions?

• Replies: 6
• Views: 20,468
31st March 2006, 12:58
5. ### Closed: How to find a square root of a large number?

• Replies: 16
• Views: 20,408
23rd March 2012, 20:39
6. ### Closed: Double integral in MATLAB

• Replies: 4
• Views: 19,805
25th June 2009, 12:40
7. ### Closed: How to make your own ultraviolet ink?

• Replies: 4
• Views: 19,580
16th October 2004, 14:26
8. ### Closed: differences between radio frequency wave and sound wave?

• Replies: 5
• Views: 19,328
15th January 2007, 14:35
9. ### Closed: c code for matrix inversion

• Replies: 2
• Views: 18,950
2nd July 2004, 09:37
10. ### Closed: Matlab embeded PSD function

• Replies: 4
• Views: 18,158
16th October 2005, 14:49
11. ### Closed: pdf of product of two random variables

• Replies: 3
• Views: 17,933
18th July 2010, 01:33
12. ### Closed: Reasons for modulation

• Replies: 11
• Views: 17,685
14th November 2005, 17:55
13. ### Closed: Why do we use complex numbers

• Replies: 42
• Views: 17,202
11th October 2012, 18:06
14. ### Closed: how to convert signed decimal to unsigned decimal?

• Replies: 7
• Views: 16,617
FvM
21st March 2009, 00:18
15. ### How to Create energy ?

• Replies: 140
• Views: 16,540
13th September 2013, 19:09
16. ### Closed: Recommend books about optics basics

• Replies: 20
• Views: 16,404
20th February 2008, 02:20
17. ### Closed: Help me get a Fourier transform of sinc

• Replies: 8
• Views: 16,274
8th May 2012, 05:39
18. ### Closed: dc equivalent of 240v rms

• Replies: 7
• Views: 15,874
24th March 2004, 07:12
19. ### Closed: QUANTUM PHYSICS VIDEO LECTURES

• Replies: 9
• Views: 15,546
19th May 2007, 17:24
20. ### Closed: Projection Matrix function in matlab:

• Replies: 1
• Views: 15,235
17th November 2011, 12:53
21. ### Closed: Poisson's equation in cylindrical coordinates

• Replies: 8
• Views: 15,060
1st March 2009, 18:58
22. ### Closed: Looking for beginner materials about quantum mechanics

• Replies: 5
• Views: 14,797
17th March 2008, 12:15
23. ### Closed: Drawing circles in MATLAB

• Replies: 3
• Views: 14,704
5th January 2011, 20:54
24. ### Closed: to find the envelope of some data in Matlab

• Replies: 1
• Views: 14,682
13th January 2006, 07:51
25. ### Closed: Solution of differential equation dy/dx=(4x+y+1)^2

• Replies: 1
• Views: 14,080
27th June 2006, 10:16
26. ### Closed: Square wave made up of sine waves??

• Replies: 5
• Views: 13,814
21st June 2006, 13:24
27. ### Closed: Serway - Physics for Scientists and Engineers 6th Edition

• Replies: 3
• Views: 13,406
eap
11th April 2006, 11:38
28. ### Closed: measurement uncertainty formula...

• Replies: 4
• Views: 13,048
12th February 2010, 03:13
29. ### Closed: Does capacitance changes with frequency?

• Replies: 8
• Views: 12,961
14th May 2006, 20:36