Inverse Laplace transform of ( frac{1}{(s+1)(s-1)(s+2)} ) is?

1.	Inverse Laplace transform of ( frac{1}{(s+1)(s-1)(s+2)} ) is?
A.	<sup>1</sup> <sub>2</sub> e<sup>t</sup> + <sup>1</sup> <sub>6</sub> e<sup>-t</sup> + <sup>1</sup> <sub>3</sub> e<sup>2t</sup>
B.	<sup>1</sup> <sub>2</sub> e<sup>-t</sup> + <sup>1</sup> <sub>6</sub> e<sup>t</sup> + <sup>1</sup> <sub>3</sub> e<sup>-2t</sup>
C.	<sup>1</sup> <sub>2</sub> e<sup>-t</sup> <sup>1</sup> <sub>6</sub> e<sup>t</sup> <sup>1</sup> <sub>3</sub> e<sup>-2</sup>
D.	<sup>1</sup> <sub>2</sub> e<sup>-t</sup> + <sup>1</sup> <sub>6</sub> e<sup>-t</sup> + <sup>1</sup> <sub>3</sub> e<sup>-2</sup>
Answer» C. <sup>1</sup> <sub>2</sub> e<sup>-t</sup> <sup>1</sup> <sub>6</sub> e<sup>t</sup> <sup>1</sup> <sub>3</sub> e<sup>-2</sup>

Discussion

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