La silguionte cs dc In function fx aludida en los 1 2 3 y 4

La silguionte cs dc In function f(x) aludida en los 1, 2, 3, y 4.

Solution

1) critical numbers are 1 and 7

Option c

2) f\'(x) =0 at maximum point i.e. at x =7

Option a

3) f\'(x)>0 when f(x) is increasing

Hence at x = 4

Option c

4)

f\'(x)<0 when f(x) is decreasing

Hence at x = -2

Option a