# HELP! Inverse Laplace Transform

by Patton84
Tags: inverse, laplace, transform
 P: 2 I'm having some trouble getting the inverse Laplace to the following problems...I need some help F(s)=24/s^5 F(s)= 4/[((s-2)^2)+25 F(s)= s/(s-1)(s+1)
 HW Helper P: 6,202 For the first one, consider L{tn} works out to be for n>0. For the second one what is $$L^{-1} (\frac{1}{s^2+k^2)$$ for the third one, split into partial fractions.
P: 2
 Quote by rock.freak667 For the first one, consider L{tn} works out to be for n>0. For the second one what is $$L^{-1} (\frac{1}{s^2+k^2)$$ for the third one, split into partial fractions.

would this be right for the third one

A/s-1 + B/s+1 = s

PF Gold
P: 619
HELP! Inverse Laplace Transform

 Quote by Patton84 would this be right for the third one A/s-1 + B/s+1 = s
Yes that's correct.
P: 279
 Quote by djeitnstine Yes that's correct.
No that is wrong, the right formula is:

$$\frac{s}{(s-1)(s+1)}=\frac{A}{s-1}+\frac{B}{s+1}$$

from which you need to determine A and B.

coomast
PF Gold
P: 619
 Quote by coomast No that is wrong, the right formula is: $$\frac{s}{(s-1)(s+1)}=\frac{A}{s-1}+\frac{B}{s+1}$$ from which you need to determine A and B. coomast

Oops I thought he multiplied it out and set it equal to s

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