Is it true that (if not true, give correct answer) (a) for any positive integer k (b)
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(a) for any positive integer k
(b) for a periodic signal x(t) of fundamental period T0
for any value of t0? Consider, for instance, x(t) =cos(2Ï t).
(c) cos(2Ï t) δ(t 1) = 1?
(d) if x(t) = cos(t) u(t) then d x(t)/dt = sin(t) u(t) + δ(t) ?
(e) the integral
(f) if x(t) = cosh(t) u(t) = 0.5 (et + et) u(t) is d x(t)/dt = sinh(t) u(t) + δ(t)?
(g) that the power of the causal full-rectified signal x(t) = £sin(t)£ u(t) is twice the power of its even component xe (t) = 0.5[x (t) + x(t)]?
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