Today Mr.Max was away, so we had Mr.Richer as a sub. Today we worked on accelerated math and on the assignment that is due on Monday.
HOMEWORK: Student Exercise Questions: Page A-8, Exercise 2, 1-3, AND Page A-9, Exercise 3, 1a-f. ALL DUE MONDAY.
How to get to the Word Problems folder:
1) go to my computer
2) then open Rsfiles
3) open the coursework folder
4) go to the math folder and open it as well
5) then go to our class which at the moment is the second folder (Applied Math 30SA-1)
6) then you should see a folder which is labelled "word problems". Open it.
How to find the Vertex of a Parabola:
1) graph the parabola on your calculator.
2) press 2nd, then Trace.
3) then choose either minimum(cup-shaped) or maximum(cap-shaped) and press enter.
4) your screen should now show you graph again. at the bottom it will be asking you to go to the left side of where you think the vertex is. Do so with your arrow keys and then slecting enter when you are on the left.
5) now it will ask you to go right of where you think the vertex is. Do this the same as step 4 except you go to the right.
6) after you've hit enter to finalize your point in step 5, you then move your cursor to where you think the vertex is and press enter.
7) the correct vertex should then appear at the bottom of the screen. It will also state whether you used maximum or minimum.
Hopefully this helps.
*Remember that you should have 25 mastered accelerated math objectives by Wednesday October 31.*
The scribe for Monday is Shure.
Showing posts with label calculator instructions. Show all posts
Showing posts with label calculator instructions. Show all posts
Friday, October 26, 2007
Monday, October 15, 2007
Scribe for Oct.12
Today in class we started off with mental math as usual. Then we had a summary of what we learned yesterday. (I wasn’t left any screenshots of anything so I will try to summarize what was written.)
We talked about the “a” value, and how the bigger the number the skinnier the opening in the parabola,
Ex: y-k=a(x-h)^2
Y-1=10(x-(-2))^2
And the smaller the number the wider the opening is.
Ex: Y-1=-.15(x-(-2))^2
We also found a way to find the vertex of a parabola on a calculator.
By putting in an equation
Ex: Y=x^2+6+4
You enter “Y=6x+x^2+4” into you Y= screen the graph the equation.
It should look something like this:
By pressing the keys 2nd, TRACE, 3. You can find the minimum. It is the minimum because the vertex is below the x-axis. The go to the left side of the vertex when it asks for the “Left Bound?” then press ENTER. Then it will ask “Right Bound?” so you go to the right of the vertex and press ENTER. *(NOTE) It doesn’t matter how far left or right you go as long as you are on the side it is asking for*. The it will say “Guess?” you press ENTER and you will get you answer which in this case is (-3,-5).
The we worked on our Accelerated math (which is due soon) till the end of class.
We talked about the “a” value, and how the bigger the number the skinnier the opening in the parabola,
Ex: y-k=a(x-h)^2
Y-1=10(x-(-2))^2
And the smaller the number the wider the opening is.
Ex: Y-1=-.15(x-(-2))^2
We also found a way to find the vertex of a parabola on a calculator.
By putting in an equation
Ex: Y=x^2+6+4
You enter “Y=6x+x^2+4” into you Y= screen the graph the equation.
It should look something like this:
By pressing the keys 2nd, TRACE, 3. You can find the minimum. It is the minimum because the vertex is below the x-axis. The go to the left side of the vertex when it asks for the “Left Bound?” then press ENTER. Then it will ask “Right Bound?” so you go to the right of the vertex and press ENTER. *(NOTE) It doesn’t matter how far left or right you go as long as you are on the side it is asking for*. The it will say “Guess?” you press ENTER and you will get you answer which in this case is (-3,-5).
The we worked on our Accelerated math (which is due soon) till the end of class.
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