Determine All Critical Points for the Function $$y = 4 x ^ { 2 } - 128 \sqrt { x }$$

question 91

Multiple Choice

Determine all critical points for the function.
- $$y = 4 x ^ { 2 } - 128 \sqrt { x }$$

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

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