Sunday, December 8, 2013

SP6: unit K concept 10- repeatibg decimal to a rational number

Hello I'm Ana from period 4. Things that we must careful of are to put tge correct number of zeroes infront of the grouped number. We must also remember that it is a repeating decimal which means those numbers do not stop there they go on forever. We must also remmeber the 2 that was ubfrobt of the decimal because that is still part of our repeating decimal .when we bribg ut back down we set if to equal the denominator of 99 so we can easily combine it to 31/99 which is what we got before we brought the 2 back. Once we have added 198 /99 and 31/99we get 229/99. You can chrck this on your graphibg calculator by plugging it in and you should get the original decimal that we had.

Thank you. I hoped this helped :D

Sunday, November 24, 2013

Fibonacci Haiku: The Delicious Cheeses

http://cheesestorecedarhurst.com/yahoo_site_admin/assets/images/baileys_coffee_other.215110825_std.jpg
Cheese 
Stinky
The best
I love cheese
I Cant get enough cheese 
Thank You delicious amazing cheese that I LOVE
American, Swiss, Cheddar, Jack, Cotija, Mozzarella, Pepper Jack, Yes I love you all 

Saturday, November 16, 2013

SP5 unit J concept 6-solving systems of equations that have repeating denominator s.




Hello this is Ana from Period 4. Some thibgs that ypu must be careful of when solving this problem is making sure that our distribution is correct. Also. When combining like terms to make sure that the addition and subtraction are correct. we muat be very caregul when it comes to the signs. When pluggibg it into the graphing calculator to use RREF and after plug in the A B and C into the decomposed part of the problem. When checking your answer we mulitiply the common denomitators to the bottom if everythibg cancels out to add to the original numerator.
I hoped this helped. Thank you.

SP4: Unit J Concept 5- Partial Fraction Decomposition with Distinct factors



Hello this is Ana from Period 4. Somethings that you should be careful with Decomposition is when foiling to be very careful with the positive and negative signs. You must be very careful with the simple mistakes because they can change your entire answer. Also don't forget to distribute the A, B, and C to the corresponding parts. When combining like terms be sure to set it equal to the like term that is in the original equation. To make sure that everything is correct just plug it into your graphing calculator by pressing 2nd matrx, edit set to a 3x4 scale, put in all your values, 2nd quit, 2nd matrx, math, RREF, 2nd matrx again, enter, and close parenthesis. I hope that this helped.

Thank you.

Monday, November 11, 2013

SV#5 Unit J Concepts 3-4: Solving Matrices



   

This is Ana from Period 4                                
This Is  Doctor Problem #5. The things that we must be aware at and pay close attention to is that when I am looking for the zero i always use the row that is above it to turn it into a zero. Also, make sure that by the end we create a triangle of zeroes at the bottom and a down step of ones. Also when checking for your answer in the graphing calculator you use matrx, edit, and make sure it is a 3x4 scale and write the correct numbers in. Then we press second quit and matrx again, math and search for RREF. then select A and close the parenthesis. When checking for your answer the values of x, y, z will be listed vertically.

I hope this video helped. Thank You for watching.

Sunday, October 27, 2013

SV#4: unit I concept 2 - Graphing Logarithmic Equations



In this video we are to graph logarithmic equations. Things that we have to be careful of are to get the correct h. When we get the value of h we get the opposite of what is given to us in the equation. When getting the k it is the same value that is given to us in the equation. We also have to remember that when finding the x intercept we put y=0, and when finding the y intercept we must plug in 0 into x. The asymptote is x=h. So this means that when graphing we will have a vertical line and our graph will be on the right side of the asymptote. I hope that this video helped clarify anything that was unclear. Thank you for watching.

Thursday, October 24, 2013

SP3: Unit 1 Concept 1


Somethings that you might have to be aware of is that when solving for the asymptote y=k. Also, when finding the x-intercept the equation is set equal to zero but also we can not find the ln of a negative number which means that there will be no x-intercept if this happens. For the domain it is all numbers on the x intercept are valid. These are just some keypoints that i wanted to clarify.

I hope this SP helped solve this problem. Thank you for your time.

Wednesday, October 16, 2013

SV#3: Unit H concept 7: Finding logs with Given Approximations



This video will go over Unit H Concept 7. We are given some information that we are to use in order to find our Treasure. These given clues must be used in order to find the answer to our problem. The "clues" that we are given stand for a letter and they spell out our code. This code will evaluate if we are correct on the problem.

Some thing that we have to pay close attention to is the way that we breakdown our treasure. When we breakdown our treasure we must use our Givens to get our answers. When we have fully broken down the treasure we must plug in the logs that we have already been given, This means that substitute back in. When we substitute back in we make sure that we fully simplify. ONce this is done we just substitute the letters in and that will be our code.

Thank You for watching.

Sunday, October 6, 2013

SV#2: Unit G:concepts 1-7: how to solve and graph rational functions



This problem demonstrates the difference between a horizontal asymptote and a Slant Assymptote. It goes by a step by step instructions as to how to solve and graph these rational functions. There are multiple steps that are to be done in order to get to graphing or to get to the next step. Each section has its own method of solving things but not everything is overly complicated. Make sure to solve this problem yourself before watching the video.

Some things that you must be very careful with is when solving for the x intercepts you only set the factors equal to zero to the ones that have not been canceled. Which. Means that if it is a hole then you do not set that equal to zero. also when trying to find the limit notation be very careful as to what direction you are looking at because depending in the direction the infinity sign will change from negative to positive. If there are don points on that side if the graph then it will most likely mean that it is a positive infinity. Also, if you do not feel so sure about your graph or if you want to be more accurate then try to plug in  as many key points  as possible. you just write inn the equation and press graph then press trace and the number of the x value you are trying to find. This will help make a more accurate graph.

I hope this  video helped. Than you for watching. ☺️

Sunday, September 29, 2013

SV#1: Unit F Concept 10- Finding Real and Imaginary Zeroes of a Polynomial


This is a video from Unit F Concept 10 that goes through step and step instructions for how to do this specific problem. This type of problem uses different rules like Descartes rule of signs, P/Q, and synthetic division. Not only those rules and equations but also the quadratic formula.

Make sure that when doing this problem you attempt it first and then watch the video tutorial. Some things that u should be very careful and cautious with is that when using Descartes rule of signs when finding f(x) you look at the sign of coefficient of the term. When finding f(-x) you are looking at the exponent of each term. If the exponent is even then the sign stays the same but if the exponent is odd the sign changes. Then you look at the changes of signs throughout the entire function and that will evaluate how many positive and negative zeroes there are. Also, when using synthetic division you are adding the numbers. And you are using synthetic division until you have reached to a quadratic.

I hope this video helped. Thank you for watching.

Monday, September 16, 2013

SP #2: Unit E Concept 7: Graphing a Polynomial and Identifying All Key Parts

 This Is the Problem and the Factored equation is also listed. Make sure to please solve this yourself before actually checking the answers.
 This is the final graph of the equation.
My equation for This SP is f(x)=x^4-5x^3-4x^2+44x-48

 This problem demonstrates how to find the end behavior of each graph and their x-intercepts. The ending behaviors is solved by just looking at the equation itself. The entire point of this studenjt problem is to be able to solve the ending behaviour and to be able to plot the x-intercepts on the graph and connect them in a way that will make this all work out. For this End behaviou problem we will not need to find the extrema. Which means we do not need a calculator for this problem. Pay close attention as to how the line ofn the graphs and the points are connected.

There are many things that we must look out for in order to be able to solve this equation. In order to be able to find the factored equation you must factor out any common factors of the equation. If there aren't any then we shall go straight to using the X and factoring out. Once we have done this we must find the end behavior. Since our highest degree is even and the leading coefficient is positive the graph will be As (x) approaches infinity f(x) is positive infinity and as (x) approaches negative infinity f(x) is positive infinity. Both ends of the graph are going up.  The X-intercepts are (2,0) M2 (-3,0) M1 and (4,0) M1. The multiplicity determines if the line will end up going Through (M1), Bounce(M2), or Curve(M3). To find the y-intercept you plug in 0 into x and that will be your answer.

Tuesday, September 10, 2013

WPP #3 Unit E Concept 2: The amazing set


Create your own Playlist on MentorMob!

SP#1: Unit E concept 1: Graphing Quadratics and identifying all key parts


 This problem is about how to convert a function into a parent function. When you have found your parent function you must be able to pick out your vertex from this equation simply by looking at it. To Find the y-intercept you just plug 0 into x and solve. The axis will always be x= a number. To solve for the x-intercept you solve the function.

In order to solve this  function you must look out for the signs. Also. If a number is factored outside the parenthesis to remember to bring it back down in the equation later on DON'T FORGET ABOUT IT. When finding the Axis you must take the opposite sign of that number because when it is inside the parenthesis that is what you do, The way that yo graph it. Lastly, remember that if the x-intercept ponts do end up being real numbers that you must solve completely.