logic How can we check our Boolean simplification is done correctly?

Variability or spread of a distribution. Whey we need it!

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

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MPPET 1996 Hindustan: trig integral ∫ sin^2(x) -cos^2(x)/(sin^2(x) cos^2(x)) dx

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

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

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Penn. State U: Suppose the p.m.f of discrete random variable X is ...

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

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

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Pantun Melayu [Pulau Pandan Jauh Ke Tengah]

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Columbia U: 1st way integral ∫√(x^2-9)/x^4 dx

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2nd way: ∫1/(√(x-α)(x-β)) dx

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2 ways: integral x√(x-5) dx

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A cubical die, numbered 1 to 6 is weighted so that a six is twice as likely to occur as any other #.

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Lamar U: #9 1st way: trig integral ∫sec^2(9x) tan^3(9x) dx

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trig integral ∫1/(4-3cos^2(x)+5sin^2(x)) dx

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2 ways: derivative √(x+1) √(x-1)

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2nd way: integral ∫ 1/(5x^2 -3x +7) dx with BONUS

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2nd/2 ways: derivative x^2/3 + y^2/3 = a^2/3

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Columbia U: 10th/10 ways Evaluate the indefinite integral ∫1/(1+e^x) dx withOUt u-sub

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