Posted by Anonymous on .
If f(x)=2x3 find yhe average gradient between x=1 and x=2

geometry 
Reiny,
Since f(x) = 2x  3 is of the form f(x) = mx + b,
which represents a straight line with slope m, the slope is 2 no matter where you are on the line.
So the "average" gradient is 2