2 ways: exp integral ∫e^√x dx

2 ways: The following measurements were taken by an antique dealer as he weighted to the ...

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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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1st way: exp ∫(e^x)/x (1+x log(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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2nd way: integral ∫ log √x(x^n) dx

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3rd/10parts: Exclusive disjunction

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2.5 ways: trig derivative x sin(x) cos(x)

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count comb Show (n-r)* nCr = n * (n-1)Cr

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count quick review: Permutation vs Combination

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Find r, if 5 4Pr = 6 5(r-1)

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EP19 Tower of God Season 2 (Sub Indonesia) 1080p

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1st/2ways: Find the sum 1/7, 10/21, 17/21, 24/21, 31/21 via median.

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2 ways: ∫x√(x+1) dx

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2nd/2ways: Find the sum 1/7, 10/21, 17/21, 24/21, 31/21 via "picture".

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sum Show 1+3+5+...+nth term = n^2 via picture

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1st/10 parts: Logical disjunction

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2nd way: rational function integral ∫x^3/√ (1+x^2) dx

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1st/2 ways: derivative y=(ln(x))^x

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

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