CIE 9231 2021 November Paper 21 Q1

题目

Problem

Find the Maclaurin’s series for $e^x\tan x$ from first principles up to and including the term in $x^2$ .

[5]

题目中文翻译

从第一性原理求 $e^x\tan x$ 的麦克劳林级数，展开至包含 $x^2$ 项为止。