Tuesday, June 2/09

Hello everyone. Just to remind you, even though it is not needed, there are 7 days exactly until our exam. I hope you are all ready for it.

Today Mr.Maks recorded the lesson about what we will see on the first day of our exam, explaining "Applications of Periodic Functions".



He gave two approaches, or the two types of questions we will have on the first day. The first being given information to use, and the second will give you information that you will have to use the regression function or the "SinReg" function.



The first question referred to in the video is question 6 of the "Sinusoidal Data Exam Questions" booklet. It asks you to create a graph showing the depth of a tide over a time of 24 hours, as part "a". Part "b" asks for the period of the function, and it asks for what the period represents. Part "c", and the last part of this question asks for a time table showing when she has safe passage through the channel, knowing that her boat needs 1.3 meters of water to float.
Mr.Maks explains how to answer the question, and it's 3 parts in the video.



The second question he explains is question 11, which is about two Ferris wheels. It has three parts "a,b, and c"
Part "a" wants the max height of the first Ferris wheel. "b" wants to know how long it takes for the second Ferris wheel to complete one revolution. Part "c" says each ride costs $3.00, and both last about 5 minutes. Telling you this the question asks which ride you'd rather take, and why.



Mr.Maks didn't fully answer this question, that's is for tomorrow, maybe.



For the second approach for the first day of the exam, the first question he used for an example is question 17, which talks about a paddle-wheel. The question has three parts t it that asks:
"A" wants a graph to show the information.


"B" tells you to determine the equation for the sinusoidal curve.
And "c" asks for the length of time that the reflector is under the water, and it asks how you came to that answer.
(see video or look at the booklet to get the full question)



For the video, click here.