2nd/3 ways: How many chords can be drawn through 21 points on a circle?

CBSE 2000 Hindustan: integral (1+tan(x))/(x+log(sec(x)) dx

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

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STPM Math T Sem.2:

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

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diff eq: Solve dy/dx = (2y4x^4)/(xy^3) ❌separable to ✅separable

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sqrt integral ∫(√x+1)/(x+√x) dx

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Screen Recording 2024-02-02 at 1.54.05 AM

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derivative log f(g(x)) (p(r(x)))

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Alternate way: log integral ∫1/(bx+xln(ax^r)) dx

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2 ways: diff eq Solve dy/dx-x^2=0

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Buy Train Tickets for Spring Festival to Go Home for the New Year

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当你想要啪啪啪的时候，却发现没有套套怎么办？

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Why is it different from what the book says?

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UK fragrance brand Jo Malone Slams Copycat Black Actor Ad Campaign—Chinese Version Sparks Racial Dis

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[Masterpiece Appreciation] Can you tell just how “adult” this sculpture is?

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Screen Recording 2024-05-05 at 11.29.37 PM

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Find the 2nd-order partial derivatives of f(x,y)=2xy^2-3x^2+xy^3

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International student driving an electric vehicle with a passenger gets pulled over, then assaults a

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Screen Recording 2024-05-05 at 11.28.23 PM

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#11 2019 MIT Integration Bee Final

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