■(lim@x→0) (x tan⁡〖2x-2x tan⁡x 〗)/〖(1-cos⁡2x)〗^2 is

This is a very famous limit

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The value of limx→0 2 ( 1-cos x√cos2x³√co3x......¹⁰√cos10x)/x²) is

limits x tends to 0 '(xtan2x-2xtan x)/(1-cos 2x)^2' equals || '(xtan2x-2xtan x)/(1-cos 2x)^2'

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' limit x tends to 0 '1-cosx(sqrt(cos2x))/x^2' || '1-cosx(sqrt(cos2x))/x^2' ||

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