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Derivatives of Trigonometric Functions 三角函数的导数
对应的图像(sinx 和 对应导数的图像)
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具体证明
较复杂,略
(书上证明较严谨,比较长)
简单不太严谨证明,可见百度
http://baike.baidu.com/link?url=dhIeii7Sfgc4uicXPtzkAgZnl-QN3Np5gO6WJmd_-5V1hA0j2b6vrXkMXmeDKoM1jfOsbhvvMscm4_En0qRcLq
结论
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同理,可以得出:
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还有:
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Derivatives of Trigonometric Functions三角函数的导数
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例子:
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过程:
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