请谈一下【转换】【数列】【对数】在现实生活中的运用?
题目
请谈一下【转换】【数列】【对数】在现实生活中的运用?
Choose 2 of the 3 topics from (transformations,geometric series,logarithms) and research how these would be used in the real world.
答案
答：
Transforms:Fourier transform can tell us what sinusoid functions the original time function contains.
Series:As an example,the number of some kind of animal grow at a rate of exponential sequence:1,2,4,8,16,…
Logarithm:It is a kind of method in calculation.It converts multiplication into addition.
举一反三
已知函数f（x）=x，g（x）=alnx，a∈R．若曲线y=f（x）与曲线y=g（x）相交，且在交点处有相同的切线，求a的值和该切线方程．
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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