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Sunday, October 27, 2013

SV#4 Unit I Concept 2 - Graphing Logarithmic Functions

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     The trickiest part of this concept is putting it in the calculator right because parenthesis matter a lot if you forget your answer will be totally different. The y intercept is tricky too because when it comes with the log people think its a times not an exponent so they get it wrong and when they see that its an exponent they get stuck there. When that happens you have to use the natural log its in your calculator and you divide them. So at the numerator it should be the exponent and at the denominator it is the base.


Wednesday, October 23, 2013

SP#3 Unit I Concept 1:Graphing exponential functions and identifying x-intercept, y-intercept, asymptotes, domain, range



      You first write out what a, b, h, and k is. When you do that you find the asymptote which is y=k. you then find the x-intercept which is y=0. you add the coefficient first then you divide the first number to leave the exponent alone. in this case if you have a negative ln ( which i didnt put there sorry) it should be ln of 2 divided by ln of -8 but whenever theres a negative the calculator will tell its a imaginary number.so it will be undefined and your answer is you dont have an x-intercept.
      Then you move on to the y-intercept and that you equal x to 0. then you just use PEMDAS pretty much. When you go to your graph you plug in the asymptote which is -2 and put it as a horizontal asymptote you plug in the y-intercept you got. You go back to your key points and your third key point is always h even if you found it on your x- intercept. you look for the numbers you dont have in there and put it on the key points. to see how it will look like you put the original equation dont forget its an exponent so you put a ^ before you put the (x+1) and the put 2nd table and you will find your points then you plug them in and it should look like that.




Tuesday, October 15, 2013

SV #3 Unit H Concept 7- Finding Logs Given Approximation

           

      So first you have the clues to find your treasure which is the color green. You first multiply to see if you can reduce that to be able to get some of your clues. When you do find your clues you put them in log form. The tricky part of this is the log base 9 to 7 to the 3rd power you can change that to make it look easier to you and make you understand it as well.
      You would put the exponent in the front which is 3 so it would be 3 log base 9 to 7. Then you look at the logs and see where should go where so you can put the right letter where it needs to be. Don't forget when you have 3 log base to 7 in this case log base 9 to 7 is R BUT don't forget the 3 in the front so it should be 3R plus your other answers that you had. ALSO DON'T FORGET THAT SOME ARE - BECAUSE OF THE DIVISION SIGN. Thanks for Watching!!!! :D

Sunday, October 6, 2013

SV#2 Unit G Concept 1-7- Finding all parts and graphing a rational function

   

          Hi my name is Derik and this is Unit G Concept 1-7. This Video will show you how to Figure out the Vertical and Slant Asymptotes and as well as the holes if there is something canceled out in the equation if not then there will not be a hole at all. You will also learn how to graph them as well and how they are  suppose to look like.
          The tricky part for me was the calculator because in this problem it looked the right side was a positive infinity but at the same time it also looked like a negative infinity. It just got very confusing for me at that point now. I go know though that the extra numbers you have to to plot more to make a line in the calculator i know how to do that. Other than that if you follow these steps and listen you will get it. Thanks for watching..