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chrispypatt
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My homework problem is as follows:
Consider the Laplace transform shown below.
(4s3+15s2+s+30)/(s2+5s+6)
a. What is the value of f(t=0) and f(t=∞)? Use the initial and final value theorems.
b. Find the inverse transform f(t). Use this expression to find f(t=0) and f(t=∞) and compare with the result of part a).I know to find the final value, using FVT, limt->inff(t)=lims->0sF(s), but I am given the stipulation that the poles must be in the left side of the domain. My book words the definition of IVT and FVT by saying IVT is only valid if f(t) has no impulse functions (the function must be rational) and that for FVT, we must add the rule about the poles. I am confused because everywhere online, including how my professor explained it, is that the impulse rule applies to ONLY IVT and the poles ONLY applies to FVT.
If I went with how my prof taught, Neither theorem can be applied to the problem but if I go by the book's wording, IVT does not apply but FVT shows the final value of f(t) will go to 0.
If someone more knowledgeable with these two theorems could clarify this, that would be helpful! Thanks in advance.
Consider the Laplace transform shown below.
(4s3+15s2+s+30)/(s2+5s+6)
a. What is the value of f(t=0) and f(t=∞)? Use the initial and final value theorems.
b. Find the inverse transform f(t). Use this expression to find f(t=0) and f(t=∞) and compare with the result of part a).I know to find the final value, using FVT, limt->inff(t)=lims->0sF(s), but I am given the stipulation that the poles must be in the left side of the domain. My book words the definition of IVT and FVT by saying IVT is only valid if f(t) has no impulse functions (the function must be rational) and that for FVT, we must add the rule about the poles. I am confused because everywhere online, including how my professor explained it, is that the impulse rule applies to ONLY IVT and the poles ONLY applies to FVT.
If I went with how my prof taught, Neither theorem can be applied to the problem but if I go by the book's wording, IVT does not apply but FVT shows the final value of f(t) will go to 0.
If someone more knowledgeable with these two theorems could clarify this, that would be helpful! Thanks in advance.
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