Student Video #3: Unit H Concept 7

• What is this video about?

This video covers an example from Unit H Concept 7. Concept 7 is all about using what we have learned from previous concepts and applying them to another more complex problem, such as applying the knowledge we have of bringing one log together and then expanding it. We also use substitution in this concept when figuring out the expanded out log and plugging in the correct variable or number into the equation. In this lesson we also review how multiplication while solving logs, turns into addition. The main focus of this concept is to use the clues given to us to figure out the log given so that we can expand the log and substitute the values of the logs we expanded to form a new simplified equation. 

    

• What does the viewer need to pay special attention to in order to understand the concept?

The viewer needs to pay attention to each of the steps taken to ultimately figuring out the correct solution to the problem of finding logs with clues. Also, to be successful in solving this type of problem we need to remember to use two of the log properties to add onto our list even though they are not written on the paper. We need to be responsible enough to remember to the two properties that are log base b of b= 1 and log base b of 1=0. These two properties are two extra clues that can be used to helps us figure out what to substitute once expanding the logs. In order to also understand the concept it is critical that you remember that the logs with fractions may need to be multiplied by a number on top or bottom so that one of the clues given can show up. In your ultimate answer there should not be a log it should be the values given when substituted.