Please answer the following question?
回答 (1)
2021-03-15 2:36 am
✔ 最佳答案
(a)f(x) = (x² - 4)²
f(2 + h) = [(2 + h)² - 4]² = (2² + 2×2×h + h² - 4)² = (4h + h²)² = [h(4 + h)]² = h²(4 + h)².
(b)
f'(2)
= lim{h→0} [f(2 + h) - f(2)]/h
= lim{h→0} [h²(4 + h)² - (2² - 4)²]/h
= lim{h→0} [h²(4 + h)²]/h
= lim{h→0} h(4 + h)²
= 0 × 4²
= 0
收錄日期: 2021-05-04 00:39:22
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20210314141722AAOhbpK