BC:9.1 Evaluate the following integrals. If the re- sult is a constant, give a numerical value for it: a.) b.) L. (19 cos2 (100nt +15°) 10-sin² (50rt) L. ( cos2 (100πt +15°) 10-sin² (50rt) 8(t+2.4)dt 8(t - 2.4)dt c.) -|k| [~~ (± (7) . Σ 8 (w_2πTk) ejwt dw 8 5

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