3rd/3 ways: How many chords can be drawn through 21 points on a circle?

Flat Tire Late at Night on the Third Day of the Lunar New Year

leviliwai

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Solve the following differential equation cos^2(x)dy/dx +y = tan(x)

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Alternate way: Find 1+2+3+... +(n-1)+n via "polynomial degree 2"

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MP 2000 Hindustan: Evaluate ∫(tan(x)+cot(x))^2 dx

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AI 2008 Hindustan: Evaluate integral ∫ 2/3 cos(x)/sin^2(x) dx

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logic Idempotent law show x=xVx

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2022 postgraduate re-examination interview unfairness: Blacklisting the School of Mathematics and St

tooooooooooy

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How do you say "tighten the bottle cap" in English? You actually twist it like this? I'm cracking up

diego_cooley_03_01

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It's not impossible to put a graphics card in the fridge when necessary; it can still run...

lauel-

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Sum of Square vs Square of Sum

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#6 2024 MIT Integration Bee Qualifying Exam

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Lamar U 2nd way: evaluate trig integral ∫17(xe^x+e^x)sin(e^x)-14sin(x) dx

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A Simple Trick to Identify Mileage-Adjusted Cars

glowduq_02_01

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2024 New Rules on Betrothal Gifts—Do You Understand Them?

ma66lvshibuxingma

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AP Calculus 2nd way: trig integral ∫sin^2(x) cos^2(x) dx

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Five Key Techniques of Repetition in Design

shejishiazeaz

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exp integral ∫10^x e^(10x) dx

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#9 2010 MIT Integration Bee Qualifying Exam

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Sun Yuqiang's lost road book, we'll find it for him today.

woshizhangguoyu

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Columbia U: 1st way integral ∫√(x^2-9)/x^4 dx

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