derivative: . If we set this equal to zero, there is also no solution.
Therefore, there are no maxima, minima, or points of inflection. Note that the first derivative is
always positive. This means that the curve is always increasing. Also notice that the second
derivative changes sign from positive to negative at x = −8. This means that the curve is
concave up for values of x less than x = −8 and concave down for values of x greater than x =
−8.
Now, we can draw the curve. It looks like the following: