# Transcribed Image Text: Using the grapng utility, graph the function y = f'(x). f'(x) = x4 – 15x³ + 73x? –

Excerpt
Use the symbol co for infinity, U for combining intervals, and an appropriate type of parenthesis “(“,”)”, “[“,”]” depending on whether the interval is open or closed. Enter Ø if the interval is empty. Use decimal notation. Give your numbers to three decimal places.) interval(s):

Transcribed Image Text: Using the grapng utility, graph the function y = f'(x).
f'(x) = x4 – 15x³ + 73x? – 129x + 70
f’ (x) =
4 – 15x + 73x² – 129x + 70
20
2
8
-20
+ Transcribed Image Text: Use the graph to find the point(s) of inflection of f.
(Give your answer as a comma-separated list of points in the form (*, *). Use decimal notation. Give your numbers to three
decimal places. Enter DNE if the function has no inflection points.)
inflection point(s):
Use the graph to determine the interval(s) on wch the function f is concave down.
(Give your answer as an interval in the form (*, *). Use the symbol co for infinity, U for combining intervals, and an
appropriate type of parenthesis “(“,”)”, “[“,”]” depending on whether the interval is open or closed. Enter Ø if the interval is
empty. Use decimal notation. Give your numbers to three decimal places.)
interval(s):