Determine All Critical Points for the Function $$f ( x ) = 80 x ^ { 3 } - 3 x ^ { 5 }$$

question 374

Multiple Choice

Determine all critical points for the function.
- $$f ( x ) = 80 x ^ { 3 } - 3 x ^ { 5 }$$

• A) x = -4
• B) x = -4 and x = 4
• C) x = 0, x = -4, and x = 4
• D) x = 4

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