Question

L want the solution ​

Answer 1

i) Increasing on:

(−∞,2), (6,∞)

Decreasing on:

(2,6)

ii) ( 6,4) is the local minima

`(2, (44)/(3) )` is the local maxima

iii) Concave down on

(−∞,4) since f''(x) is negative

Concave up on

(4,∞) since f''(x) is positive

iiii)

Find where the second derivative is equal to 0

`(4, (28)/(3))`