Inverse Laplace transform Help

Icy950
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I couldn't figure the sol'n for this problem
Could somebody help?
Thanks a lot

Find the following Inverse Laplace transform

(L^(-1))*[1/(4s+1)]:frown:
 
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Icy950 said:
I couldn't figure the sol'n for this problem
Could somebody help?
Thanks a lot

Find the following Inverse Laplace transform

(L^(-1))*[1/(4s+1)]:frown:

That's almost direct from a table...

or are you doing these by hand?
 
I'm trying to do this by hand
Hopefully I can get some help
Thanks a lot
 
Well you will definitely need to show some work.

Also, you should check out LaTeX in the tutorial section. Then you can show your work as:

\frac{1}{4s+1}
 
It might be easier for you to see the solution if you first divide everything by 4:

\frac{1/4}{s+1/4}

Now it should be clear that:

L^{-1}(\frac{1/4}{s+1/4}) = \frac{1}{4}e^{\frac{1}{4}t}
 
There are two things I don't understand about this problem. First, when finding the nth root of a number, there should in theory be n solutions. However, the formula produces n+1 roots. Here is how. The first root is simply ##\left(r\right)^{\left(\frac{1}{n}\right)}##. Then you multiply this first root by n additional expressions given by the formula, as you go through k=0,1,...n-1. So you end up with n+1 roots, which cannot be correct. Let me illustrate what I mean. For this...
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