(See attached file for full problem description)
A signal x(t) of finite energy is applied to a square-law device whose output y(t) is given by
y(t) = x2(t)
The spectrum of x(t) is limited to the frequency interval -W ≤ f ≤ W. Show that the spectrum of y(t) is limited to -2W ≤ f ≤ 2W.
(Hint: Express y(t) as x(t) multiplied by itself.)
A question on spectrum limitations based on a signal applied to a square-law device.
Contribution margin is used as the basic building block of Cost, Volume, Profit analysis. This process has its limitations, but offers a powerful snapshot of how best to set production levels with respect to variable costs.
Value costing remains an important aspect of strategic business decisions. It allows decision-makers a rapid snapshot of optimal output levels with respect to variable costs, price-point, and profitability. While CVP makes several assumptions that limit its application to specifics, it remains an important part of accounting for decision-makers. (969 words, APA format, with references).View Full Posting Details