Problem

Given a function f(x)=2x2+3x+1, find the average rate of change of f on the interval [1,4].

Answer

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Answer

Step 4: Substitute the results from Step 1 and Step 2 into the formula above, we get 41641=353.

Steps

Step 1 :Step 1: Substitute x=1 into the function, we get f(1)=2(1)2+31+1=6.

Step 2 :Step 2: Substitute x=4 into the function, we get f(4)=2(4)2+34+1=41.

Step 3 :Step 3: The average rate of change of f on the interval [1,4] is equal to f(4)f(1)41.

Step 4 :Step 4: Substitute the results from Step 1 and Step 2 into the formula above, we get 41641=353.

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