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Find the second derivative of f(x) = sec(pix)

Find the second derivative of f(x) = sec(pix)
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Find the second derivative of f(x) = sec(pix)

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User Kirogasa
by
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1 Answer

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the main formula is (1/u)' = - u' / u²
f(x) = sec(pix) = 1/ cospix, f ' (x) = (1/ cospix)' = pi sinpix / cos²pix

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User Dan Ling
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