HMMT 二月 2002 · CALC 赛 · 第 2 题
HMMT February 2002 — CALC Round — Problem 2
题目详情
- Find lim . h h → 0
解析
- Find lim . h h → 0 2 2 2 x − x − h − 2 hx Solution: This equals lim = lim − h − 2 x = − 2 x . Alternate Solution: This h h → 0 h → 0 2 is the definition of the derivative of − x with respect to x , which is − 2 x .