Have you ever thought that a simple motion like closing your laptop, is related to math? Well it actually is. I was able to track the lid of my computer closing using a program called Logger Pro and turned it into a quadratic graph. The graph has how high the computer lid was in centimeters with the Y-axis and how long the time is in seconds with the X-axis. The Y-intercept of the graph is 21.29 and the X-intercept of the graph in between 0.7 and 0.8. This is a restricted graph because it has a starting point and has an ending point.

There are a lot of other examples of restricted parabola in the real world. For example, kicking a soccer ball is a restricted parabola because it has to have a starting point being where the person kicked it and it has to hit the ground after a while because of gravity. Shooting an arrow is also a great example because there has to be a person shooting it and it also has to fall onto the floor. Lastly, a metronome is a good option because it can not go into the ground therefor restricting its height.

Math is everywhere around you. Next time you see something, look closely at it because it might just be another parabola.

Perry

From Alan,

I liked how your explanations were very clear both in the video and in the paragraph. The video is very short and straight forward. The idea of the laptop closing is very creative.

Perry

Hi Perrry!

I like how your explanations were clear and concise in the video and paragraph and is easy to follow and understand the information you were sharing. I like how you explained both the real representations for both standard and vertex forms. Why is this a restricted graph

From,

Arnold

Perry

Hi Perry,

I like how you showed the actual graph. In addition, I liked how you explain the vertex form so well. How might the b value affect the placement of points on the parabola?

Alexander Han