Math Problem Statement
The problem asks to determine and plot the time response of a linear time-invariant (LTI) system with an impulse response ℎ ( 𝑡 )
𝑢 ( 𝑡 − 5 ) h(t)=u(t−5), when subjected to an input signal 𝑥 ( 𝑡 )
𝑒 2 𝑡 𝑢 ( − 𝑡 − 2 ) x(t)=e 2t u(−t−2).
Solution
Here is the plot of the time response:
- The top plot shows the input signal , which is only active for .
- The middle plot shows the impulse response , which starts at .
- The bottom plot is the output response , obtained by convolving and .
The output shows how the system responds to the input after processing through the convolution operation. Since the input is active for negative times and the impulse response starts at , the output begins after this delay.
Do you want further details or have any questions?
Here are five related questions:
- How does the step function affect the behavior of and ?
- What happens if the impulse response is shifted differently?
- How does convolution differ from multiplication of two signals?
- Can you compute the convolution if the system is not time-invariant?
- What is the effect of scaling by a constant on the convolution result?
Tip: When performing convolution, always consider the time intervals where each function is active to simplify calculations.
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Math Problem Analysis
Mathematical Concepts
Linear Time-Invariant Systems
Convolution
Step Functions
Formulas
Convolution integral: y(t) = (x * h)(t) = ∫ x(τ) h(t − τ) dτ
Impulse response: h(t) = u(t − 5)
Input signal: x(t) = e^2t u(−t − 2)
Theorems
Convolution Theorem
Properties of Step Functions
LTI System Response
Suitable Grade Level
Undergraduate (Electrical Engineering, Signal Processing)
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