Use a Graphing Calculator to Determine Approximately the Internals on Which

question 66

Multiple Choice

Use a graphing calculator to determine approximately the internals on which the function $f$ is decreasing. $f ( x ) = x ^ { 4 } + 6 x ^ { 3 } + x ^ { 2 } - 24 x + 16$

• A) \([ - 4 , - 1.5 ] , [ 1 , \infty )\)
• B) \(( - \infty , - 4 ] , [ - 1.5,1 )\)
• C) \(( 0 , \infty )\)
• D) \(( 0 , - 16 )\)
• E) \(( - \infty , - 16 ]\)

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