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### Messages - Victor Ivrii

Pages: 1 ... 5 6 [7] 8 9 ... 120
91
##### Chapter 3 / Re: 3.1 question 13 typo
« on: March 16, 2020, 10:08:38 AM »
Thanks. Fixed

92
##### Chapter 5 / Re: Section 5.1, 5.2 - ok to consider delta distribution?
« on: March 10, 2020, 08:35:56 AM »
Then you need to explain more or less rigorously, what is $\delta$-distribution and how Fourier transform is defined for it. Yes, online textbook covers this topic and much more than your physics class but in more advanced chapters, we do not cover

93
##### Chapter 2 / Re: 2.4
« on: March 07, 2020, 08:08:06 AM »
Either investigate the power series or to use theorem that if $f$ is analytic in some disc $D(z_0,r)$, then the expansion at its center $z_0$ converges in this disc.

94
##### Chapter 4 / Re: 4.1 typos
« on: March 07, 2020, 08:06:06 AM »
You seem to have a different texbook than posted

95
##### Chapter 2 / Re: S2.4 online textbook
« on: February 21, 2020, 05:09:16 PM »
The error was done before. Now it fixed. Thanks

96
##### Chapter 2 / Re: Section 2.6 Problem 2
« on: February 19, 2020, 01:11:02 PM »
Pst problem or provide a link to it

97
##### Chapter 3 / Re: Section3.2
« on: February 14, 2020, 12:51:46 AM »
Sometimes, for some functions there are shortcuts, but generally not

98
##### Chapter 2 / Re: 2.2 home assignment question 18
« on: February 12, 2020, 03:12:59 PM »
Fixed. Thanks!

99
##### Chapter 2 / Re: 2.2 home assignment question 18
« on: February 11, 2020, 07:38:13 AM »

100
##### Chapter 2 / Re: 2.3 question 3
« on: February 11, 2020, 07:37:38 AM »
Your answer is correct ($-\pi i$).

If you see discrepancies, report them

101
##### Chapter 2 / Re: 2.3 textbook
« on: February 09, 2020, 06:54:26 PM »
Yes, wrong sign  in the middle (should be $\drac{1}{2i}=-\dfrac{i}{2}$) but the final result is correct

102
##### Chapter 2 / Re: Section 2.6
« on: February 03, 2020, 08:18:07 AM »
Since $u$ is defined for $x<0$ and for $x>0$, you calculate limits from the left ($u|_{x=-0}$) and from the right ($u|_{x=+0}$). This is a standard notation

103
##### Quiz 2 / Re: Quiz2 TUT5101
« on: January 31, 2020, 10:49:26 PM »
In the tsecond/third lines should be $dt$, ..., not $\partial t$,...

104
##### Quiz 2 / Re: TUT5101 QUIZ2
« on: January 31, 2020, 09:05:11 AM »
You cannot use LH out of the box for complex variables. You need to consider $z=re^{i\theta}$ and consider $\bigl|\dfrac{\operatorname{Log}(z)}{z}\bigr|$ ...

105
##### Quiz 2 / Re: TUT5101 QUIZ2
« on: January 30, 2020, 06:39:52 AM »
Wrong reasoning

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