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Elementary Transcendental Functions

Exp[z]exponential function
Log[z]logarithm
Log[b,z]logarithm to base
Log2[z], Log10[z]logarithm to base 2 and 10
Sin[z], Cos[z], Tan[z], Csc[z], Sec[z], Cot[z]
trigonometric functions (with arguments in radians)
ArcSin[z], ArcCos[z], ArcTan[z], ArcCsc[z], ArcSec[z], ArcCot[z]
inverse trigonometric functions (giving results in radians)
ArcTan[x,y]the argument of
Sinh[z], Cosh[z], Tanh[z], Csch[z], Sech[z], Coth[z]
hyperbolic functions
ArcSinh[z], ArcCosh[z], ArcTanh[z], ArcCsch[z], ArcSech[z], ArcCoth[z]
inverse hyperbolic functions
Sinc[z]sinc function
Haversine[z]haversine function
InverseHaversine[z]inverse haversine function
Gudermannian[z]Gudermannian function
InverseGudermannian[z]inverse Gudermannian function

Elementary transcendental functions.

Mathematica gives exact results for logarithms whenever it can. Here is .
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You can find the numerical values of mathematical functions to any precision.
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This gives a complex number result.
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Mathematica can evaluate logarithms with complex arguments.
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The arguments of trigonometric functions are always given in radians.
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You can convert from degrees by explicitly multiplying by the constant Degree.
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Here is a plot of the hyperbolic tangent function. It has a characteristic "sigmoidal" form.
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The haversine function Haversine[z] is defined by . The inverse haversine function InverseHaversine[z] is defined by . The Gudermannian function Gudermannian[z] is defined as . The inverse Gudermannian function InverseGudermannian[z] is defined by . The Gudermannian satisfies such relations as . The sinc function Sinc[z] is the Fourier transform of a square signal.
There are a number of additional trigonometric and hyperbolic functions that are sometimes used. The versine function is sometimes encountered in the literature and simply is . The coversine function is defined as . The complex exponential is sometimes written as .
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