A 2 digit number is equal to the sum of the product of its digits & the sum of its digits.

Find the expected value & the variance of a geometric r.v. X

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MP 8,93,96,97,99 Hindustan: Evaluate ∫ sec(x)/(sec(x)-tan(x)) dx

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1st way: exp ∫(e^x)/x (1+x log(x)) dx

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🪔 Happy Deepavali 🪔 [Nov-12-2023]

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RPET 2003 Hindustan: integral ∫sin^4(x)-cos^4(x) dx

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count quick review: Permutation vs Combination

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

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2 ways: sq root derivative 1/(√√(1/√x))

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Pantun Melayu [Sorong papan tarik papan]

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UC Davis p#12: 2nd way differentiate y=x^(x^(x^4)))

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Screen Recording 2024-05-10 at 5.44.02 PM

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Photography is great—photography is worth learning!

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MIT Integration Bee Quali Exam 2023 #7: integral

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3rd/3ways: trig integral ∫sec(x) dx

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2nd/2ways: Find trig integral ∫sec^2(x)/csc^2(x) dx

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RPReplay_Final1791960079

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RPReplay_Final1791958455

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RPReplay_Final1791961711

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RPReplay_Final1791957727

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The little sister has a very determined look; she dares to dream and can get things done.

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