3. Consider the function f(x)=x32(x3+44) with f′(x)=311(x31x3+8) and f′′(x)=988(x34x3−1) are given. Use these to
Posted: Thu Jul 14, 2022 4:36 pm
3. Consider the function f(x)=x32(x3+44) with f′(x)=311(x31x3+8) and f′′(x)=988(x34x3−1) are given. Use these to answer the following questions. (Note: sign chart must be used!) (a) [2 marks] Determine the critical number(s) of f if any exists. (b) [5 marks ] Determine the intervals where f(x) is increasing and where it is decreasing and find the local extreme value(s) if any exists. (c) [5 marks] Determine the intervals where f(x) is concave upward and where it is concave downward and identify any inflection point(s)