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Zhanxiong

No longer an (on-campus) student.

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  • Cincinnati, OH, United States
  • Member for 4 years, 5 months
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  • Last seen Apr 16 at 1:24

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Top Posts (349) All Questions Answers | Votes Newest

17 $f(x) =ax^6 +bx^5+cx^4+dx^3+ex^2+gx+h $, find $f(7)$. Jul 26 '15
11 Limit of $n!/n^n$ as $n$ tends to infinity Aug 8 '15
11 algebra problem, Solve the equation Aug 12 '15
10 Help with Spivak's Calculus: Chapter 1 Problem 22 Aug 14 '15
9 Postive-semidefiniteness of matrix with entries $1/(a_i+a_j)$ Jan 26 '16
8 Prove that $\lim_{x\to\infty}\frac{f(x)}x=\lim_{x\to\infty}f'(x)$ Aug 17 '16
8 How to prove that $(\frac{n}{k})^k\leq{{n}\choose{k}}\leq\frac{n^k}{k!}$? Jul 21 '15
8 Proof of a change-of-measure formula Dec 14 '16
7 Find the limit $\lim\limits_{x\to\infty} f(x)= \lim\limits_{x \to \infty} \left(\frac{x}{x+1}\right)^x$ Nov 22 '15
6 If $\lim_{x \to \infty} \lvert f(x) \rvert = L > 0$, then $\lim_{x \to \infty} f(x) = L$ or $\lim_{x \to \infty} f(x) = -L$. Nov 14 '15
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