ε-N定义证明 lim(n→∞)(3n^2+n)/(2n^2-1)=3/2,
问题描述:
ε-N定义证明 lim(n→∞)(3n^2+n)/(2n^2-1)=3/2,
答
|(3n^2+n)/(2n^2-1)-3/2|=|(2n+3)/2(2n^2-1)|
ε-N定义证明 lim(n→∞)(3n^2+n)/(2n^2-1)=3/2,
|(3n^2+n)/(2n^2-1)-3/2|=|(2n+3)/2(2n^2-1)|