- #1

- 7

- 0

(a) f is increasing on the interval(s)

(b) f is decreasing on the interval(s)

(c) f is concave up on the open interval(s)

(d) f is concave down on the open interval(s)

(e) the x coordinate(s) of the points of inflection are

Notes: In the first four boxes, your answer should either be a single interval, such as [0,1), a comma separated list of intervals, such as (-inf, 2), (3,4], or the word "none".

In the last box, your answer should be a comma separated list of x values or the word "none".

So, I am pretty sure for concave functions we are supposed to find the first and second derivatives.

I am unsure about the first derivative but I got:

(1/7)x(-1/7)*(1/x)

I am unsure on how to get the second derivative from this. Then unsure how to solve the rest of this problem. Thanks!