2nd/2 parts: Mean 1+2+3+...+n is just (1+n)/2. Why?

Lamar U 2nd way: evaluate exp integral ∫e^(2x)/(1+e^(2x)) dx

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

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2nd way: derivative (x^x)^x

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

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Pantun Melayu [Sorong papan tarik papan]

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lim x/e^x? as x→∞

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prob stat: Events A & B are s.t P(A)=.3, P(B)=0.4, P(A n B)=0.1. Find a) P(AnB') b)P(A' n B')

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2 ways: exp derivative a^(logb(cos(px+q))

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Watch Lilo and Stitch (2025) HD (Link in the Description)

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multivariable partial Let w=2x^2 y, where x=u^2+v^2 & y=u^2-v^2. Find ∂w/∂u & ∂w/∂v.

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Find the number of digits in mole [6.02x10^23]

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When a die was thrown the scores was an odd #. What is the prob. that it was a prime #?

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prob stat: 2nd/2 parts. One sample has a mean of M=6 &

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Evaluate these 9 integrals containing ...

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Watch Lilo and Stitch (2025) HD (Link in the Description)

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Median [special weighted mean]

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CMU integral ∫1/(x^2 √(16x^2 -19)) dx

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matrix example: How to select the column you want ...

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2nd way: integral ∫(6+4x--2x^2) dx via 1) complete sq 2) then trig. sub

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2nd way: lim ((1+h)^3-1)/x? as h →0

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