题目

2. (5.0分) lim_(x to 2)_(y to 1) (x+y)/(x-y) = ()A. 2B. 4C. 3D. 5

2. (5.0分) $\lim_{x \to 2}_{y \to 1} \frac{x+y}{x-y} = ()$

A. 2

B. 4

C. 3

D. 5

题目解答

答案

C. 3