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Partical Fractions 
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#1
Mar1008, 10:45 AM

P: 104

1. The problem statement, all variables and given/known data
Turn this into partial fraction. k1b1/[((k1+b1*s)(k2+b2*s))b1[tex]^{2}[/tex]s[tex]^{2}[/tex]] 2. Relevant equations n/a 3. The attempt at a solution original question was to find the transfer function with springs and a damper and I reduced it to this far but I cant get the partial fraction. once i get that partical fractions, i take the inverse laplace transform and get the answer. 


#2
Mar1008, 10:48 AM

P: 1,754

I'm getting dizzy reading it ...
[tex]\frac{k_1b_1}{(k_1+b_1s)(k_2+b_2s)b_1^2s^2}[/tex] Yes? 


#3
Mar1008, 10:48 AM

P: 104

yeap :)



#4
Mar1008, 03:29 PM

P: 104

Partical Fractions
well is this impossible to separate?
i did other problems but i am just stuck on this one. let me know if you need the actual problem statement... 


#5
Mar1008, 03:54 PM

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PF Gold
P: 39,552

you want, of course, to factor the denominator. I think I would be inclined to multiply out that first part and combine coefficients of like powers. It will be, of course, a quadratic. At worst, you could set the denominator equal to 0 and solve the equation by the quadratic formula.



#6
Mar1008, 04:14 PM

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P: 26,148

[tex]\frac{k_1b_1}{(k_1+b_1s)(k_2+b_2s)b_1^2s^2}[/tex]
krnhseya, just expand the bottom line into the form [tex]as^2\,+\,bs\,+\,c[/tex], and then factor it using the good ol' (b ±√b^2  4ac)/2a. 


#7
Mar1008, 07:09 PM

P: 104




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