alternate way: count sum 1 + 2 + 3+... + n via "polynomial"

4th/4ways: trig derivative sin(x)

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Pantun Melayu [Buah cempedak di luar pagar]

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logic Idempotent law show x=xVx

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COMMON MISTAKE!: directive d/dx(sin(x) cos(x)) ≠ d/dx(sin(x)) d/dx(cos(x))

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sq root derivative √x [Good to know the result]

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log 𝖎𝖓𝖙𝖊𝖌𝖗𝖆𝖑 ∫ln(ln(x))/x dx

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Review: trig tan(x+360)= tan(x) & tan(x+180)=tan(x)

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expon directive a^f(x)

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2nd way: trig integral ∫1/(cos^2(x) - sin^2(x)) dx

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Difference of 2 nonconsecutive triangular numbers

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integral ∫√(x-a)/x dx

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2nd/3part: Maclaurin Series [ahp kia]

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4th/5ways: triangular num: Show t(n-1) + tn = n^2 where tn = nth triangular number

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There are 2 lines. One line has 3 points & the other line has 6 points.

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prob stat: Compute Var(X) when X represents the outcome when we roll a fair die.

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trig derivative differentiate x^sin(x) + (sin(x))^cos(x)

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3rd/3ways: Laplace Show that ...

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Practice STPM Math Sem2 derivative

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derivative differentiate x^x - 2^sin(x)

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4th/4parts: Maclaurin Series [ahp kia]

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