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trig Show 1/(1-sin(x)) + 1/(1+sin(x)) = 2 sec^2(x)

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2nd way: derivative x^n w.r.t x^x
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2nd way: derivative x^n w.r.t x^x

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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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Review Add Math: 1.2/parts: Show a^m a^n = a^(m+n) where m & n are any 2 positive integers

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Quickie: Find the value of 4009x3991

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2nd Alt. way: log Taylor series of ln(sec(x)) withOUT Taylor series explicitly

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trig integral sin(tan(x)) cos(tan(x)) sec^2(x) dx [chain rule in reverse]

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Laman utama>trig Show 1/(1-sin(x)) + 1/(1+sin(x)) = 2 sec^2(x)>