I really with this fourier transform please

In summary, the homework statement is an exponentially decaying sinusoid is defined as f(t) = a exp (-t/towel) exp (i2(pie)vt). The attempt at a solution states that the student does not know where to start, and that they would need to do extensive reading on Fourier transforms in order to solve the problem.
  • #1
skullofchaos
4
0

Homework Statement



an exponentially decaying sinusoid is defined as

f (t) = a exp (-t/towel) exp (i2(pie)vt) ; t greater than or equal to 0
0 ; t less than zero


Homework Equations



i have to show that its Fourier transform is

F(v) = a/(2(pie)j(v-v0) + (1/towel))

The Attempt at a Solution



i don't know where to start, thnx to all who help
 
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  • #2
Welcome to PF!

Hi skullofchaos! Welcome to PF! :smile:

(it's spelt tau, not towel! :biggrin: oh, and have one: τ and a pi: π and a ≥ :wink:)

Hint: use the convolution formula.
 
  • #3
i am in 2nd year uni and i have not done any university maths so i am not sure what to do, this question is on my physics assignment
 
  • #5
thnx for the reply, but sorry, none of it makes sense to me, um, what do i have to start with and my maths is a bit rusty (i have not done maths since year 12)
 
  • #6
skullofchaos said:
thnx for the reply, but sorry, none of it makes sense to me, um, what do i have to start with and my maths is a bit rusty (i have not done maths since year 12)

well, how much do you know?

the question says "show that its Fourier transform is …"

do you know what a Fourier transform is?
 
  • #7
we did not do much on Fourier transforms and the lecture notes and textbook don't really help at all. i know how to integrate and differentiate - basic differential calculus
 
  • #8
skullofchaos said:
we did not do much on Fourier transforms and the lecture notes and textbook don't really help at all. i know how to integrate and differentiate - basic differential calculus

well, you'll need to do extensive reading on Fourier transforms then …

it's a whole subject in itself, and not the sort of thing we can give a quick introduction to :redface:

try wikipedia first, and then your textbook (which book is it?) … if that isn't enough, you'll need to find a better textbook :smile:
 

FAQ: I really with this fourier transform please

What is a Fourier Transform?

A Fourier Transform is a mathematical tool used to analyze a signal or function in terms of its frequency components. It decomposes a signal into its constituent frequencies, allowing for a better understanding of the signal's behavior.

How is a Fourier Transform different from a regular transform?

A regular transform maps a signal from one domain to another, such as from time domain to frequency domain. A Fourier Transform specifically maps a signal from the time domain to the frequency domain, providing information about the signal's frequency components.

Why is the Fourier Transform important in science?

The Fourier Transform is important in science because it allows for the analysis and understanding of complex signals and functions in terms of their frequency components. This is useful in fields such as signal processing, image processing, and data analysis.

What are the applications of the Fourier Transform?

The Fourier Transform has a wide range of applications, including signal filtering, spectral analysis, data compression, and image processing. It is also used in fields such as physics, engineering, and mathematics.

How do I use the Fourier Transform in my research/study?

The use of the Fourier Transform in research or study will depend on the specific field and application. It is important to have a strong understanding of the mathematical concepts and techniques involved in order to effectively utilize the Fourier Transform in your work. Consulting with a mentor or seeking additional resources may also be helpful.

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