求托马斯·爱迪生的英文简介大神们帮帮忙
题目
求托马斯·爱迪生的英文简介大神们帮帮忙
答案
Thomas Alva Edison Thomas Alva Edison was a man of wonderful ability who had the good luck to be born at a good time.In the period just after the American Civil War the United States was growing condi...
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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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