2013 Tianjin Question 7 Single-choice Differentiating 2013_天津卷 (2013·理) 7.函数$f(x) = 2^x |\log_{0.5} x| - 1$的零点个数为 A. $1$B. $2$C. $3$D. $4$ Answer keyB ☆ SaveCan't do it, show the explanation查看原卷 →