Question: The voltage across a device is given by V(t) = -2 + 10 cos 4t + 8 cos 6t + 6 cos 8t -5 sin

The voltage across a device is given by
V(t) = -2 + 10 cos 4t + 8 cos 6t + 6 cos 8t
-5 sin 4t - 3 sin 6t - sin 8t V
Find:
(a) The period of v(t),
(b) The average value of v(t),
(c) The effective value of v(t).

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