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Let  f(x)=x2+3x+2 .

What is the average rate of change of f(x) from 3 to 6?

 

  • 112
  • 12
  • −112
  • −12
 Feb 7, 2018
 #1
avatar+101406 
+2

Kinda' like the last one....we want to find

 

[ f(6) - f(3) ] / [ 6 - 3 ]  =

 

[  (6)^2 + 3(6) + 2  -  ( (3)^2 + 3(3) + 2 )  ]  /  3    = 

 

[ 36  + 18 +  2  -  9 -  9  - 2 ]  /  3    =

 

[ 36] / 3  =   12

 

 

cool cool cool

 Feb 7, 2018

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