Point of Inflexion
回答 (1)
2012-10-19 6:25 am
✔ 最佳答案
y = x⁴y' = 4x³
y" = 12x²
When x = 0 :
y = (0)⁴ = 0
y' = 4(0)³ = 0
y" = 12(0)² = 0
At point (0, 0), y' = 0 and y" = 0
Hence, (0, 0) is a point of inflexion.
參考: 胡雪
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