Evaluate the given Laplace transform. L{3t² cos(t)} a. b. C. d. a O b 6(s³-3s) (s² + 1)² (s³-3s) (s² + 1)³ 6(s³ - s) (s² + 1)³ 6(s³ - 3s) (s² + 1)³

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