Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Express f(t) in terms of the unit step function uc(t).

### Piecewise Function Definition

The function \( f(t) \) is defined as a piecewise function with different expressions depending on the interval of \( t \):

1. **When \( 0 \leq t < 2 \):**
   - The function is \( f(t) = t \).
   - This means the output is equal to the input.

2. **When \( 2 \leq t < 5 \):**
   - The function is constant, \( f(t) = 2 \).
   - Regardless of \( t \) in this interval, the output remains 2.

3. **When \( 5 \leq t < 7 \):**
   - The function is \( f(t) = 7 - t \).
   - Here, the function decreases linearly as \( t \) increases.

4. **When \( t \geq 7 \):**
   - The function is \( f(t) = 0 \).
   - For this interval, the output is zero regardless of \( t \).

This type of function allows for different behaviors in different ranges of the input variable \( t \).
Transcribed Image Text:### Piecewise Function Definition The function \( f(t) \) is defined as a piecewise function with different expressions depending on the interval of \( t \): 1. **When \( 0 \leq t < 2 \):** - The function is \( f(t) = t \). - This means the output is equal to the input. 2. **When \( 2 \leq t < 5 \):** - The function is constant, \( f(t) = 2 \). - Regardless of \( t \) in this interval, the output remains 2. 3. **When \( 5 \leq t < 7 \):** - The function is \( f(t) = 7 - t \). - Here, the function decreases linearly as \( t \) increases. 4. **When \( t \geq 7 \):** - The function is \( f(t) = 0 \). - For this interval, the output is zero regardless of \( t \). This type of function allows for different behaviors in different ranges of the input variable \( t \).
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