Csch
(Built-in Mathematica Symbol) Csch[z] gives the hyperbolic cosecant of z.
Degree
(Built-in Mathematica Symbol) Degree gives the number of radians in one degree. It has a numerical value of \[Pi]/180.
EulerPhi[n] gives the Euler totient function \[Phi](n).
FontFamily is an option for Style and Cell that specifies the font family in which text should be rendered.
FourierDCT[list] finds the Fourier discrete cosine transform of a list of real numbers.FourierDCT[list, m] finds the Fourier discrete cosine transform of type m.
FourierDST[list] finds the Fourier discrete sine transform of a list of real numbers.FourierDST[list, m] finds the Fourier discrete sine transform of type m.
Gudermannian[z] gives the Gudermannian function gd(z).
Hyperfactorial[n] gives the hyperfactorial function H(n).
HypergeometricPFQ[{a_1, ..., a_p}, {b_1, ..., b_q}, z] is the generalized hypergeometric function \[Null]_p F_q (a; b; z).
IntegerLength[n] gives the number of digits in the base 10 representation of the integer n.IntegerLength[n, b] gives the number of digits in the base b representation of n.