Mathematics
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Jiaru Li

I am a $11^{\text{th}}$ grader in China, studying A Level programme in an international school.

Chinese is my native language, yet I have a near-native fluency in English. I am a mathematics votary; I can answer most high-school level maths questions, or basic calculus, linear algebra, probability and statistics, and complex analysis questions.

I hope I can help you in the journey of that magnificent yet arduous subject.

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  • Last seen Feb 25 at 5:00

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6 Find the derivative of $f(x)=x^{x^{\dots}{^{x}}}$. Jan 20
5 Repeating digits in pi Jan 31
4 The limit of an integral (with statistical backgrounds) Jan 25
3 What is the value of $-\log\left(\log\left(\frac{2}{\pi^2}\right)+2\log(\pi)-\log(2)\right)$? Jan 13
2 Find all functions $f(x^2-y^2)=f(xy)(f(x)+f(y))$ Jan 14
2 Partial fractions of $\frac{x^4}{(x^2-1)^3}$ (is it possible to find coefficients without expanding?) Jan 16
2 Why is variance formula x^2f(x), not x^2f(x^2) Jan 24
1 I can't solve this integral ( $\int 3\sec^4(3x)\;dx$ ). Is there something wrong with the problem? Jan 12
1 How to Solve a Composite Function Jan 13
1 n x n Matrix Puzzle Jan 13
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