Laplace transform please check my answer

In summary, the Laplace transform of (t+2)sinh2t is (4s/(s^2 + 4)^2 ) + (4/(s^2 - 4)), and to check if it is simplified, one could put it into a common denominator or perform an inverse Laplace transform.
  • #1
cabellos
77
1
I have to find the laplace transform of (t+2)sinh2t

my answer is (4s/(s^2 + 4)^2 ) + (4/(s^2 - 4))

is this simplified as much as possible...?
 
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  • #2
Depends on what you regard as "simplification".
You might throw everything ont a common denominator, but I'm not too sure that is a simplification.
 
  • #3
first off sorry for double posting...

secondly, is my answer correct...Id really aprreciate it if someone could check.

Thanks
 
  • #4
using maple:

laplace:
[tex] (t+2)\sinh 2t [/tex]

equals:
[tex] \frac{4(s^2+s-4)}{(s+2)^2(s-2)^2} [/tex]

You can put that in the form you need to check. Or if really lazy (as I'm being) plug in s values to get an idea if you are correct, don't use this as proof that they are the same.

Also, why don't you just perform an inverse laplace on your expression to check?
 

1. What is the Laplace transform?

The Laplace transform is a mathematical tool used to convert a function from the time domain to the frequency domain. It is commonly used in engineering and physics to solve differential equations and analyze systems.

2. How is the Laplace transform calculated?

The Laplace transform is calculated by integrating the function of interest with respect to time, multiplied by a decaying exponential function. The resulting expression is then simplified and represented in the frequency domain.

3. What are the benefits of using the Laplace transform?

The Laplace transform allows for the simplification of complex differential equations into algebraic equations, making it easier to solve. It also provides a way to analyze the behavior of systems in the frequency domain, which can be helpful in understanding their stability and performance.

4. What are some applications of the Laplace transform?

The Laplace transform is commonly used in electrical engineering, control theory, and signal processing to analyze systems and solve differential equations. It is also used in physics to study the behavior of physical systems.

5. Are there any limitations to using the Laplace transform?

One limitation of the Laplace transform is that it can only be applied to functions that are piecewise continuous and have an exponential order of growth. It also assumes that the system being analyzed is linear and time-invariant, which may not always be the case in real-world applications.

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