Hi Ignacio - Sorry for the delayed reply. I assume your question refers to about 8:06 minutes into the video. To solve for a2, I need to get all the expressions with a2 on one side of the equals sign, and everything else on the other side. The first step is to add 1/4(a2) to both sides of the equation. On the right hand side, these two terms cancel. Since there is already an a2 on the left hand side, I have 1*a2, which is the same as (4/4)*a2 plus (1/4)*a2, which gives me (5/4)* a2 on the left hand side. Hope this helps! Thank you for watching!
![The Most Useful Curve in Mathematics [Logarithms]](/img/n.gif)
Wish I found you before I graduated last year. Enjoying the review. Thank you for posting.
Glad that you found it helpful. Thank you for watching!
Beautifully explained. Helped me a ton. Can't thank you enough.
Thank you for your comment, and thank you for watching!
Honestly, super helpful video, thank you!
I am glad you found it helpful, Juan! Thank you for watching!
where did you get the 5/4a_2 from? great video thank you
Hi Ignacio - Sorry for the delayed reply. I assume your question refers to about 8:06 minutes into the video. To solve for a2, I need to get all the expressions with a2 on one side of the equals sign, and everything else on the other side. The first step is to add 1/4(a2) to both sides of the equation. On the right hand side, these two terms cancel. Since there is already an a2 on the left hand side, I have 1*a2, which is the same as (4/4)*a2 plus (1/4)*a2, which gives me (5/4)* a2 on the left hand side. Hope this helps! Thank you for watching!