+0  
 
+1
185
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avatar+494 

Let   f(x) = -log(4x)+5

What is the average rate of change of f(x) from 3 to 8?  Round to the nearest hundredth.

 Apr 8, 2019
 #1
avatar+11154 
+2

Let   f(x) = -log(4x)+5

What is the average rate of change of f(x) from 3 to 8?  Round to the nearest hundredth.

-0,09 sorry - typing errors

laugh

 Apr 8, 2019
edited by Omi67  Apr 8, 2019
edited by Omi67  Apr 8, 2019
 #2
avatar+106539 
0

3 to 8  =

 

[ - log(3) + 5 ] - [ -log(8) + 5]            log(8) - log(3)          log(8/3)            

_______________________  =     ____________ =     _______   =  

          3  -   8                                         -5                          -5     

 

 

≈0.4259687322722811

___________________     ≈   -0.085  =  -0.09

           - 5     

 

 

cool cool cool                   

 Apr 8, 2019

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