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✨ Best Answer ✨

lim(x→0)sinx/x=1

5x=tとおくとx→0のときt→0なので
lim(x→0)sin5x/5x=lim(t→0)sint/t=1

分かりやすいです!!
ありがとうございます🙇🏻‍♀️

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