Thread: Increasing/Decreasing

For x>0, f is a function that



Which of the following is true?

(a) f is decreasing for x>1, and graph of f is concave down for x>e
(b) f is decreasing for x>1, and graph of f is concave up for x>e
(c) f is increasing for x>1, and graph of f is concave down for x>e
(d) f is increasing for x>1, and graph of f is concave up for x>e
(e) f is increasing for 0<x<e, and graph of f is concave down for

Consider the graph of ln(x)