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## Homework Statement

I have the transfer function:

F(s) = s^3 / ((s+12)(s+550)(s+680))

Find the lower cutoff frequency (3dB point)

## Homework Equations

s = jw

## The Attempt at a Solution

I set the equation equal to 1/sqrt(2), use s = jw, and try to solve for the frequency. Now I'm just supposed to "Put it into your calculator and off I go", but what exactly do I put into my calculator? I have a Ti-84, is that able to solve these types of problems?

What's throwing me off is the imaginary term 'j', I'm not exactly sure what to do with it when solving this polynomial.