11. Find all relative extrema for f (x) = 3x + 7x2 + x + 5.

a) Relative maximum (nearest tenth)

b) Relative minimum (nearest tenth)

c) Increasing (nearest tenth):

d) Decreasing (nearest tenth) :

Rel. Minimum - - 0.3

Rel. Maximum - None

Increasing on: - 0.3, infinity

Decreasing on: - Infinity, - 0.3

Step-by-step explanation:

f (x) = 3x + 7x2 + x + 5

To find the relative minimum, punch the equation into your graphing calculator and you should get - 2/7 as your minimum. (Divide it for a decimal number)

There is no relative maximum because of this parent function type.

Increasing on: - 2/7, infinity

And Decreasing on: - infinity, - 2/7