Logarithmic Expressions                    

                    Lesson 1

                                                                                                                                                                          

                                                            Problem:    Using the properties of logs, write in expanded:

                                                                                  ln [(5x+8) (4x+9)] 4           

                                                            

                                                            Solution      (property1:lna4=4lna) 

                                                            Step 1:            Applying it; 4ln [(5x+8) (4x+9)]                                                                           

                     

                                                            Solution      (property1: lnab = lna+lnb)

                                                             Step 2:           Applying it; 4[ln (5x+8) +ln (4x+9)]                     

                                                                                         

                                                            Solution      Answer: 4[ln 5x+8) +ln (4x+9)]            

 Step 3:

 Complete                                                                   

                                                                                                                               

                                                             Try two practice problems:  

 

                                                                                 Solve the following:

                                                                                        

A.

Write 122=144 in logarithmic form.

B.

Solve for n:log5n = 2

 

 

 

 

        

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