Sunday, October 21, 2012

Do you understand graphically...what tools are you using?

We will be wrapping up the Functions Graphing Chapter this week (Chapter 2)

There will be about three new objectives we have to learn by mid-week and the Chapter 2 Test will most likely be Thursday or Friday and cover all the chapter 2 material except 2.7/2.8 (which will not be covered or assessed).

Here is an overview of the new learning targets for this week:

Be able to …                               
            factor using multiple techniques (including completing the square  and by grouping)
            write a quadratic equation given a graph and vertex
(connect to transformations understanding)
            find all zeros (real and non-real) of polynomial functions and understand multiplicity

In addition, we will be practicing material (especially real-life applications) of the functions material we learned in section 2.1-2.6. 

Speaking of real-life applications.  Most real-life situations that can be modeled by functions are not "factorable".   If you are completing a take home quiz or have a quiz coming up you need to be very familiar with finding zeros of functions and using other graphing calculator tools like intersections, etc.

For the large number of you who have not purchased your own graphing calculator, you are putting yourself at a disadvantage.  I did not have mine at home this weekend and did find some online versions.  If you are using any online application be sure you can find zeros and intersections of functions.  A quick search (and updating my java) did allow me do find one decent online calculator.  You can try this one if you have not found something already.  http://www.calculator-grapher.com/

Again, we are not just drawing graphing graphs.  We are finding solutions. Many online version or "apps" draw nice graphs. But you need to do calculatoins with precision and are expected to be able to do that at home.

If anyone wants to share a good site and/or post some images from online calculator website.  Please do so in the comments section.







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