This is Ninglu Bar's 2013 event article, called "Thirteen Unscientific Questions." Participants in the event each sent a set of questions containing 13 keywords to the host. The host number was packaged and encrypted and sent to everyone. After the lottery, the password was announced and the questions they wanted to write were found according to the drawn number.
These are the thirteen cheating questions in high mathematics that I was unlucky to draw. Keywords: rational substitution method, radius of convergence, pinching theorem, peeling method, triple integral, zero points of polynomials, natural numbers, contours, infinite limits, Green's formula, spiral, absolute value, trapezoidal rule approximation method.
This is the only way I have been doing fortune-telling in my life, and I admire myself for finally turning it into an article [as an obsessive-compulsive person, I even crammed all 13 words into it]. Thanks to my friend Mihua, who is studying mathematics with a master's degree, for saving me, a science and engineering illiteracy who had barely even thought of the "planar rectangular coordinate system". But still, just look at mathematics, Go, etc., After all, our main business is falling in love [Hey
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