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# Forum: Mathematics and Physics

From time to time everyone is faced with these problems.

1. ### Sticky: ALL E-BOOKS HERE WILL BE DELETED!!! USERS WILL BE WARNED !!!

• Replies: 0
• Views: 22,000
6th March 2007, 17:51
1. ### Closed: dc gain of the transfer function ?

• Replies: 5
• Views: 83,585
24th April 2006, 19:11

• Replies: 12
• Views: 83,281
13th February 2010, 03:47
3. ### Closed: radian to mm conversion

• Replies: 13
• Views: 79,824
25th January 2008, 15:01
4. ### Closed: Definite Integral in Matlab

• Replies: 5
• Views: 74,704
26th May 2009, 12:20
5. ### [SOLVED]Closed: What is the difference between mean and expected value.

• Replies: 10
• Views: 58,302
13th July 2013, 08:07
6. ### proof that 2+2 = 5 weird

• Replies: 35
• Views: 56,516
11th January 2013, 01:44
7. ### Closed: relationship between rpm and frequency in ac generator

• Replies: 1
• Views: 49,100
26th January 2009, 17:24
8. ### [SOLVED] converting lux to W/m2

• Replies: 4
• Views: 44,018
5th August 2010, 12:36
9. ### [SOLVED]Closed: physical meaning of dot product and cross product

• Replies: 4
• Views: 37,739
30th November 2011, 11:55
10. ### Closed: Excel - Engineering format

• Replies: 3
• Views: 36,011
6th September 2007, 04:48
11. ### Closed: Peak-to-Peak Voltage to dB conversion

• Replies: 8
• Views: 33,501
30th December 2011, 21:48
12. ### Closed: Integrate cos(sin(x))

• Replies: 7
• Views: 31,132
2nd October 2009, 21:55
13. ### Closed: What are the differences between laplace & fourier trans

• Replies: 7
• Views: 30,559
24th May 2006, 10:07
14. ### Closed: How can find intersection of this plots in Matlab

• Replies: 4
• Views: 30,274
5th November 2009, 01:55
15. ### Closed: Why Energy is equal to charge times voltage?

• Replies: 5
• Views: 29,874
27th October 2009, 14:25
16. ### Closed: How to derive the factorial of (1/2) ?

• Replies: 5
• Views: 29,206
1st April 2008, 20:40
17. ### Closed: How to change MATLAB polar plots radius axis limit

• Replies: 1
• Views: 27,891
24th January 2006, 17:43
18. ### [SOLVED]Closed: Area under half cycle of a sine wave

• Replies: 3
• Views: 27,079
1st August 2012, 07:21
19. ### Closed: Difference between 'deterministic' and 'stochastic' ?

• Replies: 5
• Views: 26,894
6th November 2004, 05:11
20. ### Closed: mysterious equation e^jwt

• Replies: 4
• Views: 26,302
15th August 2007, 17:50
21. ### Closed: difference between natural log and log of base ten

• Replies: 9
• Views: 25,858
8th May 2006, 18:35
22. ### Closed: how to form tridiagonal matrix in matlab

• Replies: 5
• Views: 25,596
24th November 2013, 11:15
23. ### Closed: exponential function periodic or not

• Replies: 21
• Views: 24,834
30th April 2006, 18:57
24. ### Closed: How to compute derivatives of discrete data in Matlab?

• Replies: 2
• Views: 24,629
29th April 2005, 07:28
25. ### Closed: 2d normal with matlab

• Replies: 1
• Views: 24,360
27th October 2005, 11:13
26. ### Closed: what is the maning of e^jw in fourier transform?

• Replies: 24
• Views: 24,147
24th August 2006, 10:37
27. ### Closed: How to solve COSH(complex number)?

• Replies: 9
• Views: 24,055
14th March 2006, 23:07
28. ### Closed: Derivative of Bessel Function in Matlab

• Replies: 6
• Views: 23,932
27th March 2013, 23:36
29. ### Closed: Hex string checksum calculation

• Replies: 6
• Views: 23,889
25th March 2010, 15:54