Chapter 4

Chapter 4

1. Section 4.1

   • Basics of logs and how they are graphed
     • Logs can also be rewritten as exponential equations and vice versa
       • 7^4=2401
         • means that
           • log 7 2401 = 4
       • log 7 49 = 2
         • means that
           • 7^2 = 49

2. Section 4.2

   • the laws of logs are introduced and how they are applied

3. Section 4.3

   • New log scales and how they are solved are introduced
     • The new scales are
       • The ph scale which is shown as pH = -log(H^+)
         • Next is the Decidable scale which is shown as db = 10log(Is/Ir)
           • Last is the Richter scale which is shown as R = log(Ic/in)

4. Section 4.4

   • Using e ad ln to solve problems
     • 5e^2
       • Can be entered into calculator
         • the answer is 36.945
     • ln can also cancel out e
       • the ln of e = 1

5. Section 4.5

   • Getting info from a model and how we solve exponential models and equations