Q1 Consider the functions f(x) = e^x + e^(-x) and g(x) = ln(x^2 - 7). Find the largest possible domain (as a subset of real numbers) of each function.
Q2 http://upload.lsforum.net/users/public/i5146limitd248.png
Math Q- domain&limit
2012-10-24 4:12 am
回答 (1)
2012-10-24 4:45 am
✔ 最佳答案
Q1 for f(x), the domain is R. For g(x), the domain should satisfy x^2 - 7 > 0So, the domain of g(x) is x > √7
Q2 lim(x->0) (1 - cosx)/(x^2 + 3x)
= lim(x->0) sinx/(2x + 3)
= 0
收錄日期: 2021-04-13 19:04:41
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https://hk.answers.yahoo.com/question/index?qid=20121023000051KK00632