Showing posts with label Conics. Show all posts
Showing posts with label Conics. Show all posts

Tuesday, May 6, 2008

May 6... More Conics

Well hello friends! Today we began class with another mental math. One more to go until we get to abolish our two worst! And for us who have missed previous ones we all have a chance to make up for them when it works for us and Mr. Max... possibly tomorrow at lunch??


Anyways after we corrected our mental math our fantabulous teacher did a homework check which was yesterdays example assignment. We went over it as a class then began learning more conics. Today... Hyperbola's




Here are the slides from todays lesson and examples of hyperbolas.







For anyone that may want a little additional information on hyperbola's, I think it would be worth your time to check out http://www.mathwarehouse.com/hyperbola/graph-equation-of-a-hyperbola.php
I found it to be very helpful and hopefully you do to!

Anyways, remember to do your homework as our test is thursday! By for now.

Monday, May 5, 2008

Sketching/Analyzing Graphs Part 1

We began class today with Mental Math. Remember that we have two more left and then we can remove our two worst marks. There was also a discussion about a makeup time for any Mental Maths anyone may have missed. Then we began our notes for today. We're talking about sketching and analyzing graphs of conics. We got through ellipses today, and will hopefully be finished hyperbolas and parabolas by Wednesday before our test on Thursday. So the first ellipse we talked about is when the bigger number (always 'a' in our examples) is associated with the x values. This diagram shows where the axes and vertices are found. I think of this as a horizontal ellipse because the major axis is horizontal.
Following with that, an ellipse where the bigger value ('a') is associated with the y value could be called a vertical ellipse. This slide shows the equation and sketch of a vertical ellipse.
Here are a few examples of sketching and analyzing ellipses.

Here are the standard form equations for ellipses with all the components. The h and k describe the centre and are also used to find vertices as described below.


And for homework we have these two examples to do. Mr. Max said it's quite possible he will check these for homework tommorow but he will not be checking from the cumulative exercises. However, we should now be able to do Exercise 37 with the notes he gave us today.

In regards to the pretest, we omitted long answer number 6, and you can basically insert parentheses wherever there are some crazy symbols.


I think that basically covers the math stuff. Just a quick note on some totally unmathematicallyrelated stuff. Something about badgers...(and falling in holes and hamstrings and Chuck Norris...)


This is a real sign from the Parks Canada website. (http://www.pc.gc.ca/apprendre-learn/prof/sub/badger/badger_img_e.asp) If you see the sign, don't get out of the car and wait for a badger to come by. I hear they're dangerous.
Till next time,
Bethany

Friday, May 2, 2008

Conics Again...

Happy Friday Everyone!. Today Mr. Max started off by handing back our tests. Then we dived back into the world of conics. Here are some screenshots of what we did:




Just a couple more examples. Here are some general formulas that he gave us for the four conic sections:











These should get us on our way for the conic excercises. These are Ex.36,
1-10; Ex.37, 1-10, and Ex.38, 1-10. Mr.Max won't be checking homework on Monday, but there will be one eventually for these 3 excercises. And Don't forget that due today at 3:40 is 39 Objectives for Accelerated Math. On that happy note, Have a good weekend everyone!


***P.S I know it is Monday today. Me, being the ditz that I am, wrote a blog post on Friday and forgot to post it. So I apologize for this being late....hope it didn't ruin anybody's accelerated math or anything...






Amy

Thursday, May 1, 2008

classifying comics

Well having missed almost two weeks of school and finding out that it was my turn to be scribe first day back didn't exactly fill me with a nice bubbly feeling but instead a sense of dread of not knowing what was going on. So if this post isn't great I am sorry and I'll encourage anyone to add comments to try and correct it.

Well after the start of class and learning the rules for 4 conics the circle, ellipse, hyperbola, and parabola ( don't forget that a parabola can open up, down, right, or left) we then went on to how to go from general form to standard form which is basically working to simplify the equations to their simplest form.



and finally after a week away from class this here sums up how almost everything sounds.

http://www.simonsingh.net/Mathematics_Cartoons.html
Well, yesterday was a *Darlene* Day, so I will put up the screenshots of what Mr.Max did.