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

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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):

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