Fun In Pre-Calc Class
Functions
Today we learned about functions in Mr. Kelly's class and we had to try and guesstimate if you will and graph them on sheets at a real time pace then, we graphed the same video again in slow motion to see how close we were. We did the Skateboard drop at 21 inches, 24 inches and 7 inches.
Inverse Functions activity
We learned through the inverse functions activity that if the inverse of a function is a function the inverse of a the graph should line up. A squared function is a function if it is positive.
Mr. Kelly and Cresswell decided to be smarties and make it so you couldn't tell whether the ball goes in the hoop or not, however I believe it will go off the back of the rim and into the net. The first part of this assignment was really tricky just because I'm not used to using geogebra but I did get it done though. Thanks for the stumper.
In Piecewise functions worksheet we made Mr. Kelly draw us some more lines because we got the chrome books taken away this day so today 10-9-14 he drew more and I took a picture. 1 problem: this is a linear equation b moves the y-intercept up or down and the m changes the slope of the line. 2nd problem: 3rd problem: This quadratic function is very simple but the -2 makes the graph move right because - and + are opposites and the squared makes it a parabola. 4th problem the piecewise function says to graph the line if x is less than or equal to 0, to graph the square root of 4-x squared if 0less than x and 2 is greater than x, (x-2)squaredcan be graphed if 2 is greater than or equal to x .
connecting zeros and factors
Long division helps us factor polynomials by making it easier for us to do it by letting us use just x to find a linear answer. THe degree of the function helps us tell how many zeros there is going to be. BUt it will not tell us how many factors we have. "Good luck putting it in a sentence"- Mr. Kelly THANK YOU
take it to the limits
The the paper blog we tried to fold the paper as many times as we could and then explain how many times it would take to fold the paper to the moon. WHich is 42 times! however it would be microscopic and impossible to make. This is unrealistic because the fibers of the paper don't have enough flexibility to reach that many folds.
Student Loans
So for this project we learned about loans and the difference between subsidized government and unsubsidized. We (Kaden and Madison)used a 20,000 dollar loan for 5,000 dollars per year, for 15 years we said there was 180 months in a year. So our equation we used was A=20,000(1+0.466)15. We would have to play 220 every 2 weeks for 15 years
How to use a unit circle
Unit circles are very important part of understanding trigonometry because if you don't understand the building blocks of trig then you can't really move on. For a complete circle in radians it is equal to 2 pi. 30-60-90 and 45-45-90 triangles are used to make the each 30 45 60 degree angle in each quadrant. Each of these parts have a certain measurement either in degrees or radiants. You must convert to one or the other depending on what your trying to find to get the measeure of the angle in that quadrant. So the SIn of 180=0.