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Õâ¸ö»ý·Ö±È½ÏÏñLaplace transform,Áî x = t^2, ÄÇô Ö»Òªf(t) = t, Ô­»ý·Ö¾Í»¯³É
sin(\sqrt{x}) µÄLaplace transform, ½á¹ûÄã¿ÉÒÔ×Ô¼ºÈ¥¿´
http://www.wolframalpha.com/inpu ... in%28sqrt%28t%29%29
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