I found this unit difficult. This is because I hadn't done math since grade 11, which was 2 years ago. Lots of the things we did, required formulas that I had to look up and relearn. (For example, the formula for area.) I've managed to figure most of those things out again, but I'll probably still need to do more work.
I did learn the things at the beginning of the unit (Converting degrees to radians, ect.) and I did remember most of the Trig things (SOHCAHTOA), so I am able to do this. =D
I guess that's my reflection on the unit.
-Stephen
Showing posts with label Reflection. Show all posts
Showing posts with label Reflection. Show all posts
Friday, February 20, 2009
Reflection
I also apologize for being so late too. After going home from school I fell asleep.
MARY.L> pacifico, this is the escape program in that temporal dimension that the time-variant of john ly created
This unit wasn't a walk in the park, really. When Mr. Kuropatwa first introduced us to radians, I was like, "Huh?" As the days passed by though, I learned.
MARY.L> this acts like a TPDD, time plane dimension destroyer, that I use to travel through time
In every unit, there's always a hard part and an easy part. The topic that I found hard was the last one, the graph transformations —I think because it was rushed? Clearly I don't know. The Pre-Test enlightened me on that topic. I say thanks to Laika, Ingrid and Dr. Eviatar.
MARY.L> the ill intentions of the time-variant of john ly will be the punished by the Data Integrated Sentient Entity "Canopy Domain"
The topic that I found easy was the Manipulating Proportions. Expanding on why I think the topic was easy seems irrelevant, so I'll end my reflection in the next sentence or two.
MARY.L> choosing yes will transfer your universal unit code aegis to the world where codename: SNOW WHITE is a god
Good luck everyone! Look over your notes before the exam starts!
MARY.L> no will trap you in this normal world forever
MARY.L> yes?/no?
MARY.L> pacifico, this is the escape program in that temporal dimension that the time-variant of john ly created
This unit wasn't a walk in the park, really. When Mr. Kuropatwa first introduced us to radians, I was like, "Huh?" As the days passed by though, I learned.
MARY.L> this acts like a TPDD, time plane dimension destroyer, that I use to travel through time
In every unit, there's always a hard part and an easy part. The topic that I found hard was the last one, the graph transformations —I think because it was rushed? Clearly I don't know. The Pre-Test enlightened me on that topic. I say thanks to Laika, Ingrid and Dr. Eviatar.
MARY.L> the ill intentions of the time-variant of john ly will be the punished by the Data Integrated Sentient Entity "Canopy Domain"
The topic that I found easy was the Manipulating Proportions. Expanding on why I think the topic was easy seems irrelevant, so I'll end my reflection in the next sentence or two.
MARY.L> choosing yes will transfer your universal unit code aegis to the world where codename: SNOW WHITE is a god
Good luck everyone! Look over your notes before the exam starts!
MARY.L> no will trap you in this normal world forever
MARY.L> yes?/no?
BOB in the morning
Sorry about doing this so late (technically early), but I had work yesterday.
So, the first thing we learn was about the 3 units of measurement: gradients (400 units), degrees (360) and radians (2pi). then we learn how to convert degrees to radians and vice-versa. Then we learn how radians are found on a unit circle, and we figured out the sin, cosine and tangent values for the angles. Then we learned the magical functions known as co secant, secant and cotangent. Then we learned the "k" or whatever letter you want to use, which basically is a variable and depending on what you say (e.g k is a element of integers) it changes. We used this to make a formula which would show us if the circle could go on forever how could you find the point when it went around the circle a certain amount of times.
Recently, we've been learning sinusoidal waves, which are curvy graphs. the formula for the graph is y(x)= AsinB(x-C) + D which determines how your graph looks.
Well i think i wrote most of it, I think I get most of the things on the test, but i guess we'll see today. Good luck to the rest of you (doubt you'll see this though, at least before the test).
So, the first thing we learn was about the 3 units of measurement: gradients (400 units), degrees (360) and radians (2pi). then we learn how to convert degrees to radians and vice-versa. Then we learn how radians are found on a unit circle, and we figured out the sin, cosine and tangent values for the angles. Then we learned the magical functions known as co secant, secant and cotangent. Then we learned the "k" or whatever letter you want to use, which basically is a variable and depending on what you say (e.g k is a element of integers) it changes. We used this to make a formula which would show us if the circle could go on forever how could you find the point when it went around the circle a certain amount of times.
Recently, we've been learning sinusoidal waves, which are curvy graphs. the formula for the graph is y(x)= AsinB(x-C) + D which determines how your graph looks.
Well i think i wrote most of it, I think I get most of the things on the test, but i guess we'll see today. Good luck to the rest of you (doubt you'll see this though, at least before the test).
B to the O to the B to the... NOW! XD
Super late reflection but I'm pretty sure that "Did you blog" mark will come in handy XD
Well, at first in this unit i went to check myanswers from the exercises and found myself asking "why is pi=180 degrees??" among other questions. All of my questions were however answered immediately in class in more detail than I ever probably needed.
Big things (especially for me to remember):
All the proportions of a unit circle... R/Pi = D/180= Total Area/Sector Area = blah blah blah
Other small equations like s=(theta)(r)
CHOSHACAO (Heck yes PJ! XD)
Determining ALL possible angles of a given sin, cos, tan, csc, sec, or cot value and hopefully being able to determine all the values of the common angles for those... (1/0 = undefined.... good stuff...). Also making sure to factor questions properly will help when it comes to the questions solving for xER... (yeah i know that E and "is an element of" are not the same and its supposed to be more curvy-like... but cereally.. just yeah XD)
Our latest addition, y(x)= AsinB(x-C) + D, and how all of these lovely parameters transform our lovely sin wave graph.... amplitudes... periods... i thought I was done with those terms once physics was done... oh well XD
And yeah that's it... one last GOOD LUCK! to all of us writing the test tomorrow... or... today by now... Just try not to hate me TOO much when I do awesome :p just keeeeeding! XD Good night to you all! Pre-cal 40S FTW! Peace~
Well, at first in this unit i went to check myanswers from the exercises and found myself asking "why is pi=180 degrees??" among other questions. All of my questions were however answered immediately in class in more detail than I ever probably needed.
Big things (especially for me to remember):
All the proportions of a unit circle... R/Pi = D/180= Total Area/Sector Area = blah blah blah
Other small equations like s=(theta)(r)
CHOSHACAO (Heck yes PJ! XD)
Determining ALL possible angles of a given sin, cos, tan, csc, sec, or cot value and hopefully being able to determine all the values of the common angles for those... (1/0 = undefined.... good stuff...). Also making sure to factor questions properly will help when it comes to the questions solving for xER... (yeah i know that E and "is an element of" are not the same and its supposed to be more curvy-like... but cereally.. just yeah XD)
Our latest addition, y(x)= AsinB(x-C) + D, and how all of these lovely parameters transform our lovely sin wave graph.... amplitudes... periods... i thought I was done with those terms once physics was done... oh well XD
And yeah that's it... one last GOOD LUCK! to all of us writing the test tomorrow... or... today by now... Just try not to hate me TOO much when I do awesome :p just keeeeeding! XD Good night to you all! Pre-cal 40S FTW! Peace~
Thursday, February 19, 2009
BOB - Circular Functions
Hey guises, I know this is late, but better late than never right!?
Well, let me start of this BOB thing by stating that thanks to PJ, I now know what "BOB" means...
"Blogging on Blogging!" Haha, I was so enlightened when I learned that :]
Anyway, I really don't have much to say without being redundant. However I still do have some advice for you!
- First off, remember that cos is relative to the x-axis and that sin is relative to the y-axis.
- Also, never write "sin" or "cos" without theta because well... That's just wrong! :]
- Don't forget that when given a negative value in terms of radians or degrees, it means that the direction is opposite that of the direction we would normally go. (Did that make sense? lol sorry)
- Remember 2kpi where k is an integer!
- Come prepared, with back-up ;D That is, pencils, erasers, lead, (graphing) calculators, rulers?
- Don't panic! Relax and read through the entire test before freaking out over a question that may actually be a breeze once you calm down, it's just a test!
- Oh yeah, don't forget to write one of these BOBs! ;D
- Also, look through the rest of the BOBs for more advice and tips :]
Alright, now a little solemn reflection... Just kidding :]
When we were first introduced to this unit, I was freaking out, lost, confused, and overall frustrated because the concept was so unfamiliar, plus I hadn't done any serious pre-cal math in over a year! The concept of dealing with relationships and proportions rather than formulas irked me a bit because I'll admit, my brain works like a computer sometimes. I dealt much better with plugging in variables into formulas. But, after getting the hang of it, I realized how much easier thinking in "proportions" was, and that it also provides me with better understanding!
At the moment, I can't really tell how I feel about the test tomorrow, I just hope I do well, really. Winging the pre-test and getting them all correct gave me a boost of confidence but I know I still need to review/study! Speaking of which, I should get to that now lol.
Good luck everyone! :D
Well, let me start of this BOB thing by stating that thanks to PJ, I now know what "BOB" means...
"Blogging on Blogging!" Haha, I was so enlightened when I learned that :]
Anyway, I really don't have much to say without being redundant. However I still do have some advice for you!
- First off, remember that cos is relative to the x-axis and that sin is relative to the y-axis.
- Also, never write "sin" or "cos" without theta because well... That's just wrong! :]
- Don't forget that when given a negative value in terms of radians or degrees, it means that the direction is opposite that of the direction we would normally go. (Did that make sense? lol sorry)
- Remember 2kpi where k is an integer!
- Come prepared, with back-up ;D That is, pencils, erasers, lead, (graphing) calculators, rulers?
- Don't panic! Relax and read through the entire test before freaking out over a question that may actually be a breeze once you calm down, it's just a test!
- Oh yeah, don't forget to write one of these BOBs! ;D
- Also, look through the rest of the BOBs for more advice and tips :]
Alright, now a little solemn reflection... Just kidding :]
When we were first introduced to this unit, I was freaking out, lost, confused, and overall frustrated because the concept was so unfamiliar, plus I hadn't done any serious pre-cal math in over a year! The concept of dealing with relationships and proportions rather than formulas irked me a bit because I'll admit, my brain works like a computer sometimes. I dealt much better with plugging in variables into formulas. But, after getting the hang of it, I realized how much easier thinking in "proportions" was, and that it also provides me with better understanding!
At the moment, I can't really tell how I feel about the test tomorrow, I just hope I do well, really. Winging the pre-test and getting them all correct gave me a boost of confidence but I know I still need to review/study! Speaking of which, I should get to that now lol.
Good luck everyone! :D
Wednesday, February 18, 2009
Circular Functions Reflection
Hey everybody. Since I know that if I leave this til later I'm gonna forget to do it, I will do it now just to be on the safe side. So, for me, circular functions was a pretty easy unit, and, although it was hard to remember all of the grade 11 work from last year after I had sat it at the back of my mind for months and months, it eventually became easy again. Here are a few things to remember that might catch you on the test if you don't:
1) you CAN NOT divide by a variable because, for all you know the variable could equal zero
ex. sinx^2=4sinx
sinx=4 WRONG
sinx^2=4sinx
sinx(sinx-4)=0
sinx=0, 4 RIGHT
In this case you would have been dividing by zero which would make the answer undefined
2) If you ever come up against a question where you are substituting a variable for a function times a variable, then the variable can not be the original variable from the equation. So if you get, for example, sinx in the original equation, the variable you substitute in for it CAN NOT BE X!!!!!!
3) remember that secant is 1 over cosine and cosecant is 1 over sine
4) If the denominator of anything is 0 than it is undefined. Remember that when your answering questions on the test, if the answer is undefined you have to state it with your answer.
Well that's about all I can think of at the moment. Good Luck to everyone on the test on Friday. Oh and remember the forgetting curve ( that sounds weird) and study what we've done this unit.
Bye =)
1) you CAN NOT divide by a variable because, for all you know the variable could equal zero
ex. sinx^2=4sinx
sinx=4 WRONG
sinx^2=4sinx
sinx(sinx-4)=0
sinx=0, 4 RIGHT
In this case you would have been dividing by zero which would make the answer undefined
2) If you ever come up against a question where you are substituting a variable for a function times a variable, then the variable can not be the original variable from the equation. So if you get, for example, sinx in the original equation, the variable you substitute in for it CAN NOT BE X!!!!!!
3) remember that secant is 1 over cosine and cosecant is 1 over sine
4) If the denominator of anything is 0 than it is undefined. Remember that when your answering questions on the test, if the answer is undefined you have to state it with your answer.
Well that's about all I can think of at the moment. Good Luck to everyone on the test on Friday. Oh and remember the forgetting curve ( that sounds weird) and study what we've done this unit.
Bye =)
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