Use interval notation to indicate where f(x) = x+2 if x < 0 et 2- x if 0 ≤ x ≤ 1 is continuous. if x > 1

Refer to the function:  f(x)=[x] determine f(6)

Determine the intervals of concavity for the function f(x) = xex .

Identify where the function f(x) = x³ – 4x? + 8x + 1 is increasing, decreasing, concave up, and concave down. (Give your answer as an interval in the form (*,*). Use the symbol o for infinity, U for combining intervals, and an appropriate type of parentheses "(",")", "[", or "]" depending on whether the interval is open or closed. Express numbers in exact form. Use symbolic notation and fractions where needed. Enter DNE if no such interval exists.) f is increasing on: f is decreasing on: f is concave up on: f is concave down on: Use the graphing utility to graph f. f(x) = 20 y + 10 -20 -10 10 20 -10 powered by Sousep -20