Find the average rate of change of f(x)=2x^3-2x^2-3 from x=1 to x=3. Not sure what to do with the 2x^3 and the 2x^2 -thats where i get lost...

Question

cruffo · Answer

average rate of change = slope of secant line = change in y / change in x.  
You need to find f(1) = "y1" and f(3) = "y2".
Then find the slope of the line connecting the two points (1, y1) and (3,y2).

anonymous · Answer

$$f(3)=2\times 3^3-2\times 3^2-3=33$$
$$f(1)=2-2-3=-3$$

anonymous · Answer

thats as far as i have gotten

myininaya · Answer

$$\frac{33-(-3)}{3-1}=\frac{36}{2}=\frac{18}{1}=18$$

anonymous · Answer

$$\frac{33-(-3)}{3-1}=\frac{36}{2}=18$$

anonymous · Answer

lol

myininaya · Answer

i win satellite

anonymous · Answer

fastest latex in the west

myininaya · Answer

i even put 18/1 in there (not needed though lol)

anonymous · Answer

omg lol