SV #5: Unit J Concept 3: Solving Matrices Using Gaussian Elimination

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http://www.educreations.com/lesson/view/sv5/13381570/?s=UPLvdU&ref=app
A point I failed to mention on accident was how to utilize the graphing calculator to check our matrix. First, we press 2nd matrix and go to EDIT. We change the setting to match that of the matrix: since the box is a 3 by 4, we set our calculator to 3x4. We then plug in all the numbers in our first and original matrix box into the calculator in the proper places. We then press 2nd quit. Again, we go on 2nd matrix and select MATH this time, scrolling down to rref( and press that. Once it appears on our regular screen, we then go on 2nd matrix yet again, staying on the first option and pressing ENTER so that it appears on the regular screen with rref(. Close it with the other parentheses. It should look like this: rref([A]) and ENTER. A matrix then appears on our screen withe the triangle of zeroes and the stair-step of ones and numbers that tell us what the values of x, y, and z are. This lets us know if we got the correct answer or not.

SV #4: Unit I concept 2: graphing logarithmic functions

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http://www.educreations.com/lesson/view/sv-3/12655781/?s=tM4zKF&ref=app
It is important to pay attention to how to plug in the logarithmic function into the graphing calculator properly, with the numbers and parantheses in the proper places. When actually graphing the function, take extra caution with plotting the points because they might be somewhat close to each other, which is why you have to choose numbers that are spread out as opposed to close together.

SV #3: Unit H Concept 7: Finding logs Given Approximations

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http://www.educreations.com/lesson/view/sv-3/12054820/?s=wvXp4h&ref=app
It is important to pay special attention to the steps. They might have seemed confusing but it's actually pretty easy, considering the time it took to make the video. MKe sure the log numbers are properly substituted by the letters. Combine like terms when/if necessary. The logs will always cancel out, leaving just the number which is then substituted with the letters.

SV #2:Unit G Concepts 1-7: Solving and Graphing Rational Polynomials

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http://www.educreations.com/lesson/view/sv-2/11544579/?s=UILq5K&ref=app
This video is about solving and graphing rational functions. This rational function function is predetermined to have a 3rd degree numerator, a 2nd degree denominator, ONE hole, and ONE vertical asymptote. This rational function function will also be a "slant one! a slant one!"
It is important to pay attention to how to plug in the rational function into the graphing calculator (if inserting the factored form, DON'T include the cancellations, the holes). It would also be important to correctly place the parentheses where they go in the graphing calculator, so as to separate the numerator from the denominator. Be careful with the limit notation and the symbol that informs whether to look to the right or the left of the asymptote. One other key point to know: when graphing, the result will NEVER touch the asymptote!

SV #1: Unit F Concept 10b: Finding Zeroes to 4th degree polynomials

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http://www.educreations.com/lesson/view/student-video1/11264670/?s=GxxUZe&ref=app
This video is about how to find the zeroes, complex and real, to a 4th degree polynomial. There are several important steps to solving this problem, including theorems we have just previously gone over in recent concepts.
It is important for my viewers to take note of how to use the graphing calculator to easily find the 's that will make using synthetic division so much easier and therefore not make the problem so time-consuming. It is also important to know how to put all the theorems together in order to solve the problem.