Period and Fundamental Frequency of a signal

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Plot and derivative for a signal

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Sketching signals and calculating their energies

Can you sketch these three signals then calculate their energies? μ(t) – μ(t - 15) cos(10πt) * μ(t) * μ(2 - t) r(t) – 2r(t – 1) + r(t – 2)

Linearity, order, casuality, and time variance for systems

What are the linearity, order, casuality, and time variance of each input-output relationship for systems? Thanks. 1. (dy/dt) + (1/RC)y(t) = x(t) when RC = constant 2. (dy/dt) + (t^2)y(t) = x(t) 3. (d^2y/dt^2) + y(t)(dy/dt) + y(t) = x(t) 4. y(t) = x^2(t) + 1

Plot a signal and calculate the energy

e^(-10t) * u(t)