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For the function F (s) = (s2+s+1)/s(s+5)(s+3), after splitting this function into partial fractions, the co-efficient of 1/(s+5) is?

For the function F (s) = (s2+s+1)/s(s+5)(s+3), after splitting this function into partial fractions, the co-efficient of 1/(s+5) is? Correct Answer 2.1

To obtain the constant B, multiply the given equation with (s+5) and putting s = -5. B = (s + 5)F (s) |s=-5 = (s2+s+1)/s(s+3)|s=-5 = 2.1.

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