Practice Time Scaling (1.2.2) - Introduction to Signals and Systems - Signals and Systems
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Time Scaling

Practice - Time Scaling

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Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What does it mean to compress a signal?

💡 Hint: Think about shortening the timeline of the events.

Question 2 Easy

When does expansion occur in time scaling?

💡 Hint: Consider making the signal take longer to occur.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What happens to a signal when the scaling factor 'a' is greater than 1?

It compresses
It expands
It reverses

💡 Hint: Consider a race car speeding up on a track.

Question 2

True or False: If 'a' is negative, the signal can be both reversed and scaled.

True
False

💡 Hint: Visualize flipping the signal over a mirror.

2 more questions available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

If signal x(t) = cos(t) undergoes a time scaling with a factor of -2, what new signal results and why?

💡 Hint: Recall the cosine function's symmetry and how negative factors affect outputs.

Challenge 2 Hard

Create a signal function that goes through both compression and expansion. What final effect do these operations convey?

💡 Hint: Remember the sequential application influences outcome.

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Reference links

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