Finding cutoff frequency with Short/Open Circuit Time Constant

[BlackMelon]

As in the attached circuit, you should look at the file "OTC.jpg" first because the problem statement and the circuit are in there. I solved for cutoff frequencies, and I got a lower cut off frequency greater than a higher cut off frequency.
Is there anything wrong?

Thanks

 

[Laplace]

I tried making a Bode plot of the circuit the old-fashioned way. Just what points on that graph do you think you are calculating?

 

[BlackMelon]

I'm finding both lower and upper corner frequencies by using open circuit time constant (for the upper one) and short circuit time constant (for the lower one) technique. I wonder why I've got a lower corner freq. greater than the upper

PS:Thanks for the Bode plot. I usually use MATLAB to do so. What kind of program do you love to use?

 

[Laplace]

The symbolic algebra engine I use is MathCad 15 running in a Windows 7 virtual machine on my CentOS 7 Linux computer. Have just installed the Linux version of Maple 2015 and am trying to learn how to use that.

 

[LvW]

I'm finding both lower and upper corner frequencies by using open circuit time constant (for the upper one) and short circuit time constant (for the lower one) technique. I wonder why I've got a lower corner freq. greater than the upper

Can you tell us upon which rule your method (open circuit/short circuit) is based on?