1 View PremiumJul 2, 2023
3 picture views of the sum ... 1+2+3+...+n
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logic: tautology (¬p→q)∧(¬p→¬q) →p
9 Views
Alternate way: Find 1+2+3+... +(n-1)+n via "polynomial degree 2"
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Pantun Melayu [Buah cempedak di luar pagar]
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exp Differentiate (i) b^e^x (ii) b^x&e (iii) (b^e)^x (iv) (b^x)^e
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RPET 2003 Hindustan: integral ∫sin^4(x)-cos^4(x) dx
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Solve the following differential equation cos^2(x)dy/dx +y = tan(x)
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Lamar U: Derivatives of Exponential & Log Functions Practice Problems.
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Pure Math: Calculate the coordinates of the two points on the curve
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Diff Eq: Solve sec(x) dy/dx=y+sin(x) via Integrating factor [IF]
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logic: tautology p→q≡(¬q→¬p)
3 ways: If y=x/(1+x^2) find dy/dx.
2nd/2ways: Find the sum 1/7, 10/21, 17/21, 24/21, 31/21 via "picture".
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rational function integral x/(x-√(x^2-1)) dx
rational function Find the derivative of f(x)=(4x^2+7)/x
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derivative log f(g(x)) (a)
2 ways: trig Show tan(2x)=2/(cot(x)-tan(x))
2 ways: diff eq Solve dy/dx=y-1
3 ways: derivative log(x+ (1+√(x^2)))
UC Davis #10: count prove Σi = n(n+1)/2 where i=1 to n