Let f(x) = 2x³ - 18x² + 4x + 14. The values at which f''(x) is zero are x = Concave Down interval is O Concave Down interval does not exist. Concave Up interval is O Concave Up interval does not exist.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
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Let \( f(x) = 2x^3 - 18x^2 + 4x + 14 \).

The values at which \( f''(x) \) is zero are \( x = \) [Input Box]

- \( \bigcirc \) Concave Down interval is [Input Box]
- \( \bigcirc \) Concave Down interval does not exist.

- \( \bigcirc \) Concave Up interval is [Input Box]
- \( \bigcirc \) Concave Up interval does not exist.
Transcribed Image Text:Let \( f(x) = 2x^3 - 18x^2 + 4x + 14 \). The values at which \( f''(x) \) is zero are \( x = \) [Input Box] - \( \bigcirc \) Concave Down interval is [Input Box] - \( \bigcirc \) Concave Down interval does not exist. - \( \bigcirc \) Concave Up interval is [Input Box] - \( \bigcirc \) Concave Up interval does not exist.
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