mominanisar
what is the laplace inverse of (s^4+6s18)/(s^53s^4)?



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sumbul
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use partial fractions
and take s^4 common from denomiator it will be easy to solve

sumbul
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and then use the formulae that laplace inverse of 1/s = 1 and laplace inverse of 1/s^2= t etc and laplace inverse of 1/s3= \[e^{3t}\]

mominanisar
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the answer is (e^(3t) )+t^3

mominanisar
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would you please give me the solved question

sumbul
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do you know how to make partial fractions??

mominanisar
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yes

sumbul
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then use partial fractions and it will be easy use the formulae i mentiond above

sumbul
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is it form bsc?? methods

mominanisar
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s^4+6s18=A/s+B/s^2+C/s^3+D/s^4+E/s3

sumbul
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yes right and then find A,B,C,D,E AND IT WILL BE 101 PERCENT SIMPLE

mominanisar
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ok thanks alot