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Atn(n), ·µ»ØnµÄ·´ÕýÇÐÖµ£¬ÒÔ»¡¶ÈΪµ¥Î»¡£ ÆäËüµÄ¿ÉÒÔͨ¹ýת»»µÃµ½¡£ È磺 ·´ÓàÏÒArccos(X) = Atn(-X / Sqr(-X * X + 1)) + 2 * Atn(1) Secant£¨Õý¸î£© Sec(X) = 1 / Cos(X) Cosecant£¨Óà¸î£© Cosec(X) = 1 / Sin(X) Cotangent£¨ÓàÇУ© Cotan(X) = 1 / Tan(X) Inverse Sine£¨·´ÕýÏÒ£© Arcsin(X) = Atn(X / Sqr(-X * X + 1)) Inverse Secant£¨·´Õý¸î£©: Arcsec(X) = Atn(X / Sqr(X * X - 1)) + Sgn((X) - 1) * (2 * Atn(1)) Inverse Cosecant£¨·´Óà¸î£©: Arccosec(X) = Atn(X / Sqr(X * X - 1)) + (Sgn(X) - 1) * (2 * Atn(1)) Inverse Cotangent£¨·´ÓàÇУ© Arccotan(X) = Atn(X) + 2 * Atn(1) Hyperbolic Sine£¨Ë«ÇúÕýÏÒ£© HSin(X) = (Exp(X) - Exp(-X)) / 2 Hyperbolic Cosine£¨Ë«ÇúÓàÏÒ£© HCos(X) = (Exp(X) + Exp(-X)) / 2 Hyperbolic Tangent£¨Ë«ÇúÕýÇУ© HTan(X) = (Exp(X) - Exp(-X)) / (Exp(X) + Exp(-X)) Hyperbolic Secant£¨Ë«ÇúÕý¸î£© HSec(X) = 2 / (Exp(X) + Exp(-X)) Hyperbolic Cosecant£¨Ë«ÇúÓà¸î£© HCosec(X) = 2 / (Exp(X) - Exp(-X)) Hyperbolic Cotangent£¨Ë«ÇúÓàÇУ© HCotan(X) = (Exp(X) + Exp(-X)) / (Exp(X) - Exp(-X)) Inverse Hyperbolic Sine£¨·´Ë«ÇúÕýÏÒ£© HArcsin(X) = Log(X + Sqr(X * X + 1)) Inverse Hyperbolic Cosine£¨·´Ë«ÇúÓàÏÒ£© HArccos(X) = Log(X + Sqr(X * X - 1)) Inverse Hyperbolic Tangent£¨·´Ë«ÇúÕýÇУ© HArctan(X) = Log((1 + X) / (1 - X)) / 2 Inverse Hyperbolic Secant£¨·´Ë«ÇúÕý¸î£© HArcsec(X) = Log((Sqr(-X * X + 1) + 1) / X) Inverse Hyperbolic Cosecant HArccosec(X) = Log((Sgn(X) * Sqr(X * X + 1) + 1) / X) Inverse Hyperbolic Cotangent£¨·´Ë«ÇúÓàÇУ© HArccotan(X) = Log((X + 1) / (X - 1)) / 2 ÒÔ N Ϊµ×µÄ¶ÔÊý LogN(X) = Log(X) / Log(N) [ Last edited by arqiu on 2007-4-2 at 10:54 ] |
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