1.

Given f (t) = t2e-2x cos (3t). The value of L {f(t)} is __________________

A. \(\frac{2(s+2)(s^2+4s-23)}{(s^2+4s+13)^3}\)
B. \(\frac{2(s-2)(s^2-4s-23)}{(s^2+4s+13)^3}\)
C. \(\frac{2(s+2)(s^2+4s+23)}{(s^2+4s+13)^3}\)
D. \(\frac{2(s-2)(s^2+4s-23)}{(s^2+4s-13)^3}\)
Answer» B. \(\frac{2(s-2)(s^2-4s-23)}{(s^2+4s+13)^3}\)


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