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(a) (3 pts) Solve each of the following three complex exponentials: -64 (b) (5 pts) Let x(t) be given by the following picture. Sketch 1 x(t) (c) (5 pts) Is the following signal periodic? Justify your answer. If the signal is periodic, (i) write an expression that gives all periods of the signal (showing your work), and) give the fundamental period. r(t) 2 cos(t/3)+sin(t/4)For the 1st question euler's formula must be used.

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​​​​​​roSmulo 011 e39- cos (a)) -6A )+sin(-32x2m) 3 3scolim . 2- The sionaodic. 19-27 (ii)Purlamental Time peviod

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