Question

reasoning a signal generator is used to generate signals for a lab experiment. the graph shows the frequency of the signal generated. use pencil and paper. explain your answer for part (1).

1. how many decreasing intervals are defined in the graph?
2. how are the decreasing intervals alike?
3. how are the decreasing intervals different?
4. how many decreasing intervals are defined in the graph?
5. all of the decreasing intervals indicate lengths of time when the frequency is decreasing. all of the decreasing intervals end at 0 hz.
6. how are the decreasing intervals different?

○ a. the decreasing intervals do not differ.
○ b. the decreasing intervals end at different frequencies.
○ c. the decreasing intervals start from different frequencies.

Explanation:

Step1: Identify decreasing intervals

A decreasing interval is where the graph is going down. Looking at the graph, there are 2 such intervals.

Step2: Analyze similarity of decreasing intervals

Both decreasing intervals show the frequency is decreasing and both end at \(0\) Hz.

Step3: Analyze difference of decreasing intervals

One decreasing interval starts from a lower frequency (around \(45\) Hz) and the other starts from a higher frequency (around \(120\) Hz).

Answer:

1. \(2\)
2. All of the decreasing intervals indicate lengths of time when the frequency is decreasing. All of the decreasing intervals end at \(0\) Hz.
3. C. The decreasing intervals start from different frequencies.