Question

could anybody help with definition please:
1.time domain
2. Frequency domain
3. 1st order electrical systems
4. 2nd order electrical systems

Answer 1

1.)
Time considered as an independent variable in the analysis or measurement of time-dependent phenomena.
2.)In electronics, control systems engineering, and statistics, frequency domain is a term used to describe the domain for analysis of mathematical functions or signals with respect to frequency, rather than time.
3

Answer 2

3. 1st order electrical systems
4. 2nd order electrical systems
i was hoping you could help me withese two and thankyou for your reply so kind