Scribe...i accidentally put BOB earlier-__-

*note* Mr. K. made a correction to the formula we learned in previous sessions:
the correct formulas are now and
If you look the june 5 slides, pg 6 and 7 shows how we get to these formulas (sorry, my print srn doesn't really work)

On friday, the main thing we learned was solving infinite geometric series!...here's the deal...basically, any fraction that is below 1 and over 0, to the power of infinity will be equal to zero...of course it's not REALLY zero, but our calculators don't have the potential to hold a number less than google, and there is no exact value for it since infinity is an idea and not a number...since it's really ultimately infinitely close to zero, we make it equal zero, making our lives easier. Look at the June 5th slides, page 13 for an example.

...to be honest i don't really know what else to add...i'm a little preoccupied thinking finishing up my final project and worrying/studying for the exam...if anyone needs more clarification, just leave a comment within the next week and i'll fix this up some more...

-Jonno out

BOB on Conics

This is Jonno doing my BOB on our Conics unit before the test.

So, this unit was mainly about circles, parabolas, ellipses and hyperbolas...
For each of the stated above, we learned that each of them comes from a line that is spinned in a circle, basically, forming two cones. Depending on how you slice it, you can get one of the shapes/graphs/etc, stated above. We also learned the equations for each of the stated above. After Mr. K's talk about the matrix and such, he said we should also be able to identify what it is and what it looks like just by looking at the "code" or equation. I tagged a delicious link that can help you with this a bit, so if you're interested here it is!

Basically:
Parabolas - only have one squared term (ex. x^2 + y = 1)
Circles - have 2 squared terms that have equal coefficients (ex. x^2 +y^2 = 1)
Ellipses - hav 2 squared terms whose coefficients are not equal (ex. 2x^2 +y^2 = 1)
Hyperbolas - (I'm not 100 percent sure because i wasn't here for class that day, but from what I've seen...) have two squared terms, one being positive and one being negative? (ex. x^2 - y^2 = 0).

Another thing we learned was to change equations to general form from standard form and vice-versa.

I'm pretty sure i covered most of what we learned. I know there's more stuff, like the pythagorean theorum and such being used in the ellipse and hyperbola graphs, but I don't think I currently have enough skills to explain it.

What i found hard (until today) was finding the asymptote lines of the hyperbolas, but Mr. K. cleared that up for me.

Well, that's all I'm going to put up for my BOB.
Good Luck on the test everyone!

Jonno- Out

BOB

-__-

combinatorics seemed easy to me at first...but as we moved on i found things to get harder and harder...

I understood pretty much all the formulas we learned and how to use them. This includes the pick formula, circular permutations formula, and the choose formula. I also understand the golden number stuff with Pascal's triangle and the binomial questions that we worked on.

The predicament I seem to find myself in for this unit, however, is when i should use what formula or if i should just use common problem solving sense...I tried working on the homework assigned to us today on the slides. However, i found myself having problems with questions "b" and "c" and i was unable to do anything from "d" onwards, because i wasn't exactly sure as to which formula to use. Then i tried to look at other people's blogs and bobs and see if that would help...but some people posted up different stuff and they didn't put the answers for me to check my work (i think...from what i saw anyways)...

I thought i understood it in class, however, it seems much harder by myself. I guess I will continue working on questions and hope i know enough to do well on the test this friday.

BOB

Exponents and Logarithms

This unit we learned about logarithms and exponents. And so far, i have not forgotten that LOGARITHMS ARE EXPONENTS!!!...log to the base 10 are on our calculators so we use that. We also use natural logarithms which is log to the base e, or LN.

e is approximately 2.712828

we learned a couple of formulas including:

A=P(1+r/n)^(t*n)

P=e^(r*t)

A=A0 (model)^t

A=A0 (m)^(t/p)

LogbMN=LogbM +LogbN

Logb(M/N)=LogbM - LogbN

LogbM^k = kLogbM

A bunch of the stuff we learned was basically plugging information in and then solving for whichever variable we needed to find.

I think that covers most of what we learned

Jonno - Out

Attempt on a Quick Blog

This is Jonno here as your scribe today. I will warn you right now that this scribe will NOT be of the greatest quality, because of my hectic schedule. However, let's begin with the slides!

skip slide 1 for now

slide 2 contained information that we already learned which is finding the value of x, using logarithms and LN-->Logs with base e.

slide 3 was just a recap on how the functions transform. graph one is just e^x moved down 2 units, e^-x is a reflection of e^x on the y axis, and the last graph is e^x moved down one unit>>HOWEVER!!!<
Slide 4 was also old news. y=e^x and y=lnx are inverses of each other, which is why they reflect of the line y=x. basically, in the inverse graph, the x and y values of the original graph are switched around. That is why the domains and ranges of each function is switched around, as well as the roots and y-intercepts.

Slide 5 - as we learned today, e is a number that starts 2.71828, which is roughly close to 3, so their graphs look pretty similar. y=ln(-x), i believe, is y=ln(x) reflected over the y axis. In the second graph, i believe you multiply the y values or y=ln(x) by -1, then your move the graph down, 2 units.

Slide 6 - finally, something new! the slide basically explains exponential modeling, and i think you can understand more by reading it, than by me trying to explain it.

slide 7 - in slide 7, we finally start getting engaged in work and put exponential modeling to use. By using the formula, and plugging in the given information, we are able to find out the model of the function or learn the rate at which it grows.

slide 8 - there is a cool website link on the slide that brings you to a "clock" that predicts different things, such as births and deaths, using exponential functions. Mr. K also said that using base e was better because it already gives you the rate (or some other important number>>COMMENT IF YOU KNOW THE RIGHT TERM SO I CAN CHANGE IT) .

slide 9 - in this slide we continue to learn about exponential modeling and even introduced *p!(*the amount of time required to multiply m once!).

slide 10 - we use our new found knowledge in to solve the bacteria question. Once again, we just need to know what information we're given, plug it in, and then work it out. Of course, the answer is rounded off because you can't have half of a bacteria (unless maybe it was dead).

slide 11 - i understand that we were finding the half life and plugging it into the equation and such...but there are some things i don't understand on working it out...(IF ANYONE CAN HELP ME EXPLAIN THIS SLIDE LEAVE A COMMENT PLEASE)...Mr. K did say to raise your hand if you didn't understand the question, but i really wanted to see the video-__- so now i guess i need help...


slide 13 - after watching the star treck video, we are posed with a problem...was the guy with long ears telling the truth? I found the answer to be 1 000 000 after three days. Therefore if he was saying this some time during the fourth day, the means 3 days and a bit have passed making it POSSIBLE (i think)...but if it is EXACTLY 3 days, then he was lying.


slide 14 - To Be Continued

Reminders: WE ARE HAVING A GROUP-STYLE PRE-TEST TOMORROW SO UNDERSTAND THE MATERIAL!!! ALSO, THE TEST IS STILL SCHEDULED FOR FRIDAY, SO DON'T FORGET TO DO YOUR BOB AND YOUR DELICIOUS LINKS!!!

Once again, i would like to apologize for the sloppy scribe...I don't have much time today so i did my best to finish everything in about 1 hour... If you see ANY errors in my blog or if you would like me to edit/revise/add stuff to the scribe (or try to spice it off) just leave a NASTY comment (that is still apporpriate of course) and I will do my best to change it when i have time (probably Friday)


As for the next Scribe...i choose you! EMMELION!!!

Jonno's DEV Timeline

Apr 26 - Draft 4 questions
May 3 - Prepare question 1
May 10 - Prepare question 2
May 17 - Prepare question 3
May 24 - Prepare question 4
May 31 - Finishing touches / Project Completion Date(hopefully)
Jun 7 - The Absolute Deadline

BOB

I found this unit quite challenging...Basically, this unit we learned about trig identities. The main thing we did in this unit was prove how two identities or expressions (or something) are equal. We learned that while proving that they were similar, we were not allowed to allow numbers, variables, etc. to cross over to the other side of the equal sign, or as Mr. K. says, the Great Wall of China. We were exposed to some other material such as how some identities are derived from cos^2 + sin^2 = 1. I understood how most of them worked, but i also had trouble understanding some of them. I think that was pretty much what we learned, and if it's not, then i guess you can tell that i still need a bit of help in this unit. Good Luck at the Test Everyone!

Jonno's BOB

After doing the pre-test, i think i'm just about ready for the real test. I found this unit relatively easy. However, there were some parts that i don't have total confidence in. This unit i learned:
-how to do sin/cos graphs and all those word problems relating to the graphs
-reciprocal functions graphing
-even and odd functions
-finding the inverse function of a function
-transformation or graphs

I think that pretty much sums up what we did this unit...

The part i'm not so confident in, however, is graphing absolute values because i wasn't there that day. But still, i think i know enough of it to get through the test.

I'd like to say thank you to the people who helped me understand reciprocal functions a while back and good luck to everyone on the test tomorrow.

March 12, 2009

Hey guys! It's Jonno / Jonathan, here as your scribe for today! In today's class we just did a quick recap of what we learned in the unit. It was sort of a little review in the form of a workshop. Today, I decided to explain today's lesson in the form of a flash slideshow, i guess you can call it. It took me quite a while to make it, since my print screen button didn't work and while i was making it, the symbol making thingy on the blog didn't appear for some odd reason.

*Note, you will need some sort of flash player in order to see the slideshow.
*Also, this is the way that i solved the problem, if you solved it differently, then this is just a different way to look at it*



if you can't see because it's too small or it's just not loading, here's a direct link to the flash "movie"

I hope this was able to help you out even a bit.

Also, just as a reminder, there will be a pre-test tomorrow. By now, you should also be done up to exercise 13 in your booklet!

***IMPORTANT***

!!!TOMORROW IS PI(E) DAY SO DO NOT FORGET TO BRING PIE OR WHATEVER IT IS YOU ARE IN CHARGE OF BRINGING!!!

THERE WILL BE A TEST ON MONDAY, SO DON'T FORGET TO STUDY!!!

next scribe will be ConstantEcho because that name got my attention first...

Jonno's Reflection on Circular Functions

So during class, i thought the stuff we learned was pretty easy. However, there were a couple of hard questions on the exercises. What really got me though, was questions 4 and 5 of the pre-test that we had today. I think i got it now though. I don't think there were any sections that were too troubling for me to understand. Best of luck to everyone in the test tomorrow.

BTW

WHO IS BOB?!