Intellectual Olympiad in Mathematics - 2026 ongoing

Subject: Mathematics
Level: XI
Category: student
Quiz questions: in Chinese
Example question: 计算定积分 \(\int_0^1\frac{x}{1+x^2}\,dx\)，结果为： \(\frac{1}{2}\ln 2\), \(\ln 2\), \(\frac{1}{2}\), \(2\ln 2\)