Answer Happy

Determine whether the following statements are true or false. For the true statements, justify your answers, for the false statements, give an example for which the 'if' state- ment is true and the then statement is false. (F-1 is the inverse function of s.) (a) If f is increasing, then /- is decreasing (b) If / is decreasing, then /-1 is decreasing (c) If is concave up, then /- is concave up (d) If / is concave down, then f-l is concave down