User talk:Ptast

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Hello, Ptast, and welcome to Wikipedia! Thank you for your contributions. I hope you like this place and decide to stay. Here are some pages that you might find helpful:
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Please sign your name on talk pages using four tildes ( ~ ); this will automatically produce your username and the date. If you need help, check out Questions, ask me on my talk page, or place  on your talk page and ask your question there. Again, welcome!  Spinning Spark  21:36, 11 December 2011 (UTC)

Cutoff frequency
Thank you for your contributions to cutoff frequency. However, you should not be inserting a factor of $$2\pi$$ in these expressions since this is already incorporated in angular frequancy $$\omega_c$$.  Spinning Spark  21:36, 11 December 2011 (UTC)