ComplexInfinity represents a quantity with infinite magnitude, but undetermined complex phase.
Conjugate[z] or z\[Conjugate] gives the complex conjugate of the complex number z.
DictionaryLookup[patt] finds all words in an English dictionary that match the string pattern patt.DictionaryLookup[patt, n] gives only the first n words ...
Erfc
(Built-in Mathematica Symbol) Erfc[z] gives the complementary error function erfc(z).
FactorialPower[x, n] gives the factorial power x (n). FactorialPower[x, n, h] gives the step-h factorial power x (n, h).
GenomeData["gene"] gives the DNA sequence for the specified gene on the reference human genome.GenomeData["gene", " property"] gives the value of the specified property for ...
Im
(Built-in Mathematica Symbol) Im[z] gives the imaginary part of the complex number z.
Indeterminate is a symbol that represents a numerical quantity whose magnitude cannot be determined.
InverseEllipticNomeQ[q] gives the parameter m corresponding to the nome q in an elliptic function.
JacobiAmplitude[u, m] gives the amplitude am(u \[VerticalSeparator] m) for Jacobi elliptic functions.