alternate way: count sum 1+2+3+ ... +n

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Prove Σ1/((k-1)(k+1))=(3n^2-n-2)/(4n(n+1)) where k=2 to n ∀n ≥ 2

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Prove Σ1/((k-1)(k+1))=(3n^2-n-2)/(4n(n+1)) where k=2 to n ∀n ≥ 2

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logic Idempotent law show x=xVx

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MPPET 1993 BIT Ranchi 1982 Hindusta: trig integral ∫ (1+cos^2(x)/sin^2(x) dx

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2nd way: trig integral ∫1/(1+sec(x)) dx

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2nd way: integral ∫log n√(ax+b)(ax+b) dxx

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What does SS tell us about a set of data? Under what circumstances will the value of SS equal 0?

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What does SS tell us about a set of data? Under what circumstances will the value of SS equal 0?

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