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

Find the number of permutations of the letters of the word ALLAHABAD

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

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1st/3parts: Checkpoint 1.1 STPM Math T Sem2

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Review: Linear form, Quadratic form & Bilinear form

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2nd/3ways: trig integral ∫sec(x) dx

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trig integral ∫x^2 cos(x^3) e^sin(x^3) dx

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Review: integral ∫1/(x^2-a^2)dx vs integral ∫1/(a^2-x^2) dx vs integral ∫1/(x^2+a^2) dx

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logic implication distribute across disjunction: Show x→(y∨z) ≡ (x→y) ∨ (x→z)

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exp integral e^2x/(1+e^x) dx

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#9 2020 MIT Integration Bee Quali Exam: integral ∫1/cosh^2(x) dx

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UT Austin: trig integral ∫(1-cos^2(x/2))^2 sin(x/2) dx

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UC Davis: integrate sin(x)/(1+sin(x)) dx

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UC Davis: differentiate y=ln(cos^5(3x^4))

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I.B.P Derivation [Integration By Parts]

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Do you know ... paper folding ...

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2nd example: Find the sum -0.31, -0.19, -0.07, 0.05, 0.17, 0.29 via median

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integral ∫√(x-a)/x dx

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3rd/3ways: derivative (x+1)^(1/2) (x+2)^(1/3) (x+3)^(1/4) (x+4)^(1/5) (x+5)^(1/6)

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#18 2023 MIT Integration Bee Qualifying Exam

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2nd way: √((x^2-x)/√x + √x) dx

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