Tuesday, October 5, 2010

Upcoming 314 Review for Dr. Villamizar's class

Hi all,

The math lab will be hosting a review for Dr. Villamizar's upcoming 314 exam. Here is the information for the review,

Date: Thursday, Oct. 7, 2010
Time: 7pm - 9pm
Place: TMCB 104

The TA teaching this review will be Jared McBride. He's super-smart and knows his stuff. So get a break after Dr. Villamizar's review and then get ready to have a lot of fun with Jared. He will cover material from the book as well as anything Dr. Villamizar provides.

-Math Lab Blogger

Wednesday, September 29, 2010

110 Test 2 Review Info

Dear Math 110ers-

There are two reviews coming up for Test 2, tonight and tomorrow night. Here are the details:

Date: Wed Sept 29th
Time: 7-9 PM
Location: JKB 1104
TA: To Be Determined
Tests Covered: Test 2 from W ‘10

-AND-

Date: Thu Sept 30th
Time: 7-9 PM
Location: JKB 1104
TA: To Be Determined
Tests Covered: Test 2 from F ‘09

These tests can be found online at:

http://math.byu.edu/~wright/Math%20110/Math110.html

Good luck with Midterms!

-Math Lab Blogger

Friday, September 24, 2010


Here's a sample problem of the partial derivative chain rule using a table. Just click to enlarge.

Math 313 - Understanding a Basis

Dear Math 313 and 302 students,


I know how difficult it can be to understand the concept of a basis. Hopefully this will help.

A basis is simply the set containing the fewest necessary vectors possible to represent a space.

If that didn't make any sense at all, then picture a blank x-y axis. Let the two lines (the x-axis and the y-axis) be vectors. You can notice two things:
  1. These two vectors are all you ever need to represent all of 2-dimensional space
    (Think about it-- all you need an x-value and a y-value and you can represent any point)
  2. The two vectors are linearly independent.
    (Try and represent the point (0,5) with only the x-axis - kinda hard to do, right?)
Therefore these two vectors represent a basis for 2-dimensional space.


Now, let's generalize this to 3-dimensional space. Imagine the axes for 3-d space. Now let those axes be vectors. Again:
  1. The three vectors are all you ever need to represent all of 3-d space (x,y,z)
  2. The vectors are linearly independent.
Therefore these three vectors represent a basis for 3-dimensional space.


Are you seeing the pattern? Now let's pretend that in 3-d space, you didn't have the z-axis but had a vector from (0,0,0) to (1,1,0). Do the x-axis, y-axis, and the new vector form a basis for 3-dimensional space?

If you answered no, then you'd be correct. Why?

Can you represent the point (0,0,1)? Nope-- the vectors are linearly dependent, so you can't represent all of 3-dimensional space. Therefore the vectors do not form a basis for 3-d space.

Got it yet? I hope so. As a final reminder, the requirements to be a basis for, say, n-dimensional space are:
  1. You must have n n-dimensional vectors (n vectors with n entries)
  2. Those vectors must be linearly independent
If your vectors fulfill that requirement, you've got yourself a basis!


-Math Lab Blogger

Welcome!

Dear 119 Students:

Welcome to the Math Lab Blog. Feel free to leave us a comment or ask us a question about HW, reviews, or tests. We love you and we wish you the best of luck in your classes!

-Math Lab Blogger

Welcome!

Dear 113 Students-
Welcome to the Math Lab's Blog!! Please feel free to leave us comments and ask for help on problems. We'll do our best to answer your questions promptly. We love you and we wish you the best of luck in your classes!
-Math Lab Blogger

Welcome!

Dear 112 Students-

Welcome to the Math Lab's Blog!! Please feel free to leave us comments and ask for help on problems. We'll do our best to answer your questions promptly. We love you and we wish you the best of luck in your classes!

-Math Lab Blogger

Thursday, September 23, 2010

Finding Transformation Matrices

Dear 313 and 302 students,


Just as a hint about calculating transformation matrices,

Step 1: Take the transformation of the standard basis vectors.
Step 2: Use the transformed vectors as the columns of the transformation matrix.

Voila! Success!

A sample problem will be posted shortly.


With Love,
-Math Lab Blogger

Math 110 Test 2 Reviews

Dear 110 Students-

I've lovingly scheduled two Test 2 reviews for you. Please feel free to come to both, as a different test will be covered each night. Here are the details:

Dates: Wednesday, Sept 29th & Thursday, Sept 30th
Time: 7-9 PM (both nights)
Room: 1104 JKB
TAs: TBD
Tests Covered: Test 2 from W 10 (wed) and Test 2 from F 09 (thu)

Link to Test Materials:

http://math.byu.edu/~wright/Math%20110/Math110.html

From this page you can find copies of all exams from previous semesters.

Good luck & see you all there!

-Math Lab Blogger

Dr. Chow's 314 Exam

The math lab will be hosting a review for Dr. Chow's upcoming 314 exam.

Date: Monday, September 27, 2010
Time: 2pm - 4pm
Place: JKB 2113

Jeshua Mortensen will be teaching the review. He will cover any material Dr. Chow provides as well as problems found in the book.

Come have a blast!

Wednesday, September 22, 2010

Math 334 Review Scheduled

The math lab will be hosting a review for Dr. Mckay's and Dr. Chow's upcoming 334 exam.

Date: Saturday, Sept. 25, 2010
Time: 10am - 12pm
Place: TMCB 116

Richard Black will be teaching this review. The football game won't conflict, don't you worry. It's gonna be sweet!


-Math Lab Blogger

Review for Dr. Wyckoff's and Dr. Lang's 313 classes

The math lab will be hosting a review for Dr. Wyckoff's and Dr. Lang's upcoming 313 exams.

Date: Thursday, Sept. 23, 2010
Time: 5pm - 7pm
Place: TMCB 108

Austen Gee will be teaching the review. He's covering material provided by Dr. Wyckoff. So, in more mathematical terms... Austen + review + Dr. Wyckoff's material = AWESOME!


-Math Lab Blogger

Dr. Barrett's 313 Exam Review

The math lab will be hosting a review for Dr. Barrett's upcoming 313 exam.

Date: Friday, Sept. 24, 2010
Time: 2pm - 4pm
Place: JKB 2105

The TA teaching this review is yet to be determined. But it's going to be a blast anyways!


-Math Lab Blogger

302 Review!!!

The math lab will be hosting a review for 302's upcoming exam.

Date: Thursday, Sept. 23, 2010
Time: 5pm - 7pm
Place: TMCB 112

Joshua Fetbrandt will be teaching this review. It's going to be awesome!


-Math Lab Blogger

Monday, September 20, 2010

Dr. Fearnley's 313 Class - Exam Review

The math lab will be hosting a review for Dr. Fearnley's upcoming 313 exam. Here is the information for the review:

Date: Tuesday, Sept. 21, 2010
Time: 6pm - 8pm
Place: TMCB 108

The TA teaching this review is to be determined. He or she will cover material from the book as well as any other resources that Dr. Fearnley wishes to provide.

Come have an awesome time and prepare for your exam all at once!

-Math Lab Blogger

Friday, September 17, 2010

Sample First Order Difference Equation Problem

Here's something to help take the edge off of section 2.9


Just click to enlarge!

-Math Lab Blogger

Thursday, September 16, 2010

Math 314-6 Review Scheduled

The math lab will be hosting a review for Dr. Chahal's upcoming 314 exam.
Here is the information for the review.

Date: Saturday, Sept. 18, 2010
Time: 10:00am - 12:00pm
Place: TMCB 135

Richard Black will be teaching this review and will base most of his
material off of assigned homework problems and any other material obtained
from Dr. Chahal.

Hope to see you all there!


-Math Lab Blogger

Thursday, July 15, 2010

Sample Binomial Theorem


Here's a sample problem using the Binomial Theorem. Click on it to enlarge!


With Love,

-Math Lab Blogger

Friday, July 9, 2010

Requests for Problems

Dear Students,

We are striving to put hints about difficult problems on the blog, but many times we are not sure where you need help.

Please take the opportunity to comment on this post about difficult problems you've been having with your homework, and we'll get right on it!

Thanks!

-Math Lab Blogger

Wednesday, June 30, 2010

334 - Water Tank Problems

Here is a sample problem!



(click to enlarge)


With Love,

-Math Lab Blogger

Thursday, June 17, 2010

Star Wars Calculus

Let the Summer term begin! Good luck everyone, and may the force be with you!

Friday, June 11, 2010

Laplace Transformers!


Just in honor of all students taking Math 334 and dealing with Laplace Transforms.
Good luck guys on the Final!
(Comic by SpikedMath)

Thursday, June 10, 2010

Welcome to the BYU Math Lab Blog

Hello!

We welcome you to the launching of our blog! Our hope is that we can help you even more through it. Soon there will be tips and hints regarding difficult problems on your homework for all the classes supported by the Math Lab. Don't get too excited though; you're only getting hints-- not the answers.

Also, you can come and see when the next review sessions are scheduled.

Feel free to leave comments or suggestions that you may have about the lab. If you think we could improve in some way, please tell us! If you have a personal problem with a TA, we kindly request that you do inform us discreetly, instead of publicly on the blog. This is meant to be a friendly service, and we don't want to have to deprive those who do use it for such.

Thanks! And have a great day!


-Math Lab Blogger