1 / 8

5-2 Logarithms

5-2 Logarithms. What is a logarithm?. Can you find a pattern?. Please graph y = 2 x. By plotting points. Now please graph the inverse. By plotting points. By plotting points. Here it is!. “logarithm” is the term for the inverse of any exponential function.

Download Presentation

5-2 Logarithms

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. 5-2 Logarithms What is a logarithm?

  2. Can you find a pattern?

  3. Please graph y = 2x By plotting points

  4. Now please graph the inverse By plotting points By plotting points

  5. Here it is! “logarithm” is the term for the inverse of any exponential function. y = 2x The inverse would be x = 2y This is written officially as log2x = y

  6. How to look at logarithms logbx = y can be thought of as logbn = p Then rewrite as n = bp(notice the significance of the variables chosen!!) And then solve it!

  7. Some Rules • n > 0 and p must be real. • b ≠ 1 • If logbx1 =logbx2 then x1 =x2 • Logbb = 1 • logb1 = 0 • logbbx = x 7. blogbx = x

  8. Examples • Log525 2. Log3 • logb16 = 2 4. logb = 5. log6x = -1 6. Find the inverse of log2(2x+4)

More Related