Understanding the Limit Step in LaPlace Transforms

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Jeff12341234
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I'm not sure about the answers to parts of the limit step of the work. Can you explain what the answer to that step should be?

uOmJnEv.jpg
 
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Jeff12341234 said:
I'm not sure about the answers to parts of the limit step of the work. Can you explain what the answer to that step should be?

uOmJnEv.jpg

Use that s>4. If that's so, then both of the exponents are a negative number times b, and so do go to 0 as b->infinity.
 
thanks
 
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