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### Messages - Zechen Wang

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##### Quiz-7 / Re: Q7 TUT 5201
« on: December 01, 2018, 04:58:00 PM »
here is the solution. since there are no changes along both positive axis, change of arg is zero on those lines. The only change of arg is on the arc = 2pi.

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##### Quiz-7 / Re: Q7 TUT 5201
« on: December 01, 2018, 02:22:06 PM »
Since in [0, positive infinity) f(x) is always positive and always stays on the real axis, the change in arg on [0, R] should be zero.

3
##### End of Semester Bonus--sample problem for FE / Re: FE Sample--Problem 3
« on: November 30, 2018, 08:28:40 PM »
here are the residues. modified.

4
##### Quiz-7 / Re: Q7 TUT 5201
« on: November 30, 2018, 04:42:44 PM »
the domain of t should be 0<=t<=2/π, not π

5
##### Quiz-7 / Re: Q7 TUT 5301
« on: November 30, 2018, 04:40:14 PM »
by argument principle,

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##### Quiz-7 / Re: Q7 TUT 5201
« on: November 30, 2018, 04:14:17 PM »
here is my solution

7
##### Term Test 2 / Re: TT2 Problem 5
« on: November 24, 2018, 04:59:16 AM »
Here is my solution by partial fraction.

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