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Charles Bao

I am a high school math teacher in Shanghai. Fortunately, I find this great website and I really hope I could make some friends here.

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  • Shanghai, China
  • Member for 9 years, 7 months
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  • Last seen Apr 4 at 14:31

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49 Proof of 1 = 0 by Mathematical Induction on Limits? Aug 26 '11
40 Calculate sums of inverses of binomial coefficients May 30 '12
6 Difficult Integral: $\int\frac{x^n}{\sqrt{1+x^2}}dx$ Sep 14 '11
4 How can we prove the locus is a circle? Dec 8 '11
4 Expected value of Stock Price May 28 '12
3 find an upper bound of the sequence like $a_{n+1}=\frac{na_n+a_n^2}{n+1}$ Feb 16 '17
3 how to calculate the nth power of a matrix that can not be diagonalized? Jun 2 '13
2 the strategy about a $0-1$ matrix game Jul 27 '13
2 How to solve this 0-1 linear equations? Jul 28 '13
2 How to solve polynomial functional equation $P(x,y)=P(\frac{x-y}{2},\frac{y-x}{2})$? Dec 11 '11
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