y小川的专栏

本文为《Thomas’ Calculus Early Transcendentals》阅读笔记 Definition: A function fff from a set DDD to a set YYY is a rule that assigns a unique(single) element f(x)∈Yf(x) \in Yf(x)∈Y to each elements x∈Dx \in...

本文为《Thomas’ Calculus Early Transcendentals》阅读笔记 In this section we look at the main ways functions are combined or transformed to form new functions. Sums, Differences, Products and Quotients If fff a...