怎样计算LnX? 没有用数学公式推导出用log10表示的表达式好像是Ln(x)=Log(x)/Log(n)最好自己查一下 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 导出的数学函数 以下为非基本数学函数的列表,皆可由基本数学函数导出:函数 由基本函数导出之公式 Secant(正割) Sec(X) = 1 / Cos(X) Cosecant(余割) Cosec(X) = 1 / Sin(X) Cotangent(余切) Cotan(X) = 1 / Tan(X) Inverse Sine (反正弦) Arcsin(X) = Atn(X / Sqr(-X * X + 1)) Inverse Cosine (反余弦) Arccos(X) = Atn(-X / Sqr(-X * X + 1)) + 2 * Atn(1) Inverse Secant (反正割) Arcsec(X) = Atn(X / Sqr(X * X - 1)) + Sgn((X) - 1) * (2 * Atn(1)) Inverse Cosecant (反余割) Arccosec(X) = Atn(X / Sqr(X * X - 1)) + (Sgn(X) - 1) * (2 * Atn(1)) Inverse Cotangent (反余切) Arccotan(X) = Atn(X) + 2 * Atn(1) Hyperbolic Sine (双曲正弦) HSin(X) = (Exp(X) - Exp(-X)) / 2 Hyperbolic Cosine (双曲余弦) HCos(X) = (Exp(X) + Exp(-X)) / 2 Hyperbolic Tangent (双曲正切) HTan(X) = (Exp(X) - Exp(-X)) / (Exp(X) + Exp(-X)) Hyperbolic Secant (双曲正割) HSec(X) = 2 / (Exp(X) + Exp(-X)) Hyperbolic Cosecant(双曲余割) HCosec(X) = 2 / (Exp(X) - Exp(-X)) Hyperbolic Cotangent(双曲余切) HCotan(X) = (Exp(X) + Exp(-X)) / (Exp(X) - Exp(-X)) Inverse Hyperbolic Sine(反双曲正弦) HArcsin(X) = Log(X + Sqr(X * X + 1)) Inverse Hyperbolic Cosine(反双曲余弦) HArccos(X) = Log(X + Sqr(X * X - 1)) Inverse Hyperbolic Tangent(反双曲正切) HArctan(X) = Log((1 + X) / (1 - X)) / 2 Inverse Hyperbolic Secant(反双曲正割) 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 (反双曲余切) HArccotan(X) = Log((X + 1) / (X - 1)) / 2 以 N 为底的对数 LogN(X) = Log(X) / Log(N) LnX是指以自然对数的底数,大家都忘了吧,呵呵就是LogX/loge阿。e=2.71828182845904 VB6 控件的消息如何截获问题 我想调整窗体宽度等于Frame1的宽度(最大化时也这样) --VB怎么操控EXCEL表格--?? vb中耐人寻味的问题: 怎样断开网络连接?????? 我刚刚学VB不久谁能帮我解决下问题 如何实现不规则的信息提示窗口。 如何实现在程序运行时任务栏自动隐藏? 怎么才能显示出汉字呀,着急,高手快来呀,菜鸟需要帮忙呀 在vb中如何控制光标的位置 MSChar控件属性页中Chart选项卡中的Show Markers选项对应哪个属性? 求一个简单的DLL示例(我只有90分了)
以下为非基本数学函数的列表,皆可由基本数学函数导出:函数 由基本函数导出之公式
Secant(正割) Sec(X) = 1 / Cos(X)
Cosecant(余割) Cosec(X) = 1 / Sin(X)
Cotangent(余切) Cotan(X) = 1 / Tan(X)
Inverse Sine
(反正弦)
Arcsin(X) = Atn(X / Sqr(-X * X + 1))
Inverse Cosine
(反余弦)
Arccos(X) = Atn(-X / Sqr(-X * X + 1)) + 2 * Atn(1)
Inverse Secant
(反正割)
Arcsec(X) = Atn(X / Sqr(X * X - 1)) + Sgn((X) - 1) * (2 * Atn(1))
Inverse Cosecant
(反余割)
Arccosec(X) = Atn(X / Sqr(X * X - 1)) + (Sgn(X) - 1) * (2 * Atn(1))
Inverse Cotangent
(反余切)
Arccotan(X) = Atn(X) + 2 * Atn(1)
Hyperbolic Sine
(双曲正弦)
HSin(X) = (Exp(X) - Exp(-X)) / 2
Hyperbolic Cosine
(双曲余弦)
HCos(X) = (Exp(X) + Exp(-X)) / 2
Hyperbolic Tangent
(双曲正切)
HTan(X) = (Exp(X) - Exp(-X)) / (Exp(X) + Exp(-X))
Hyperbolic Secant
(双曲正割)
HSec(X) = 2 / (Exp(X) + Exp(-X))
Hyperbolic Cosecant(双曲余割) HCosec(X) = 2 / (Exp(X) - Exp(-X))
Hyperbolic Cotangent(双曲余切) HCotan(X) = (Exp(X) + Exp(-X)) / (Exp(X) - Exp(-X))
Inverse Hyperbolic Sine(反双曲正弦) HArcsin(X) = Log(X + Sqr(X * X + 1))
Inverse Hyperbolic Cosine(反双曲余弦) HArccos(X) = Log(X + Sqr(X * X - 1))
Inverse Hyperbolic Tangent(反双曲正切) HArctan(X) = Log((1 + X) / (1 - X)) / 2
Inverse Hyperbolic Secant(反双曲正割) 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
(反双曲余切)
HArccotan(X) = Log((X + 1) / (X - 1)) / 2
以 N 为底的对数 LogN(X) = Log(X) / Log(N)
阿。e=2.71828182845904