sinxcosx=(sin2x)/2
另2x=t
則x=t/2
原式=1/2sint
因?yàn)閟int的值域?yàn)閇-1,1],
所以當(dāng)2x=(3/2+2n)∏即x=(3/4+n)∏(n為整數(shù))時(shí)其最小值為-1/2
Sin(X)*cos(X)的最小值
Sin(X)*cos(X)的最小值
數(shù)學(xué)人氣:101 ℃時(shí)間:2020-10-01 10:29:16
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