Mathematica handles formulas of all types, from polynomials with millions of terms to complex combinations of higher mathematical functions. It provides powerful general ...
Im
(Built-in Mathematica Symbol) Im[z] gives the imaginary part of the complex number z.
Re
(Built-in Mathematica Symbol) Re[z] gives the real part of the complex number z.
ExpToTrig[expr] converts exponentials in expr to trigonometric functions.
GaussianIntegers is an option for FactorInteger, PrimeQ, Factor, and related functions that specifies whether factorization should be done over Gaussian integers.
TrigToExp[expr] converts trigonometric functions in expr to exponentials.
Reals
(Built-in Mathematica Symbol) Reals represents the domain of real numbers, as in x \[Element] Reals.
TrigExpand[expr] expands out trigonometric functions in expr.
Abs
(Built-in Mathematica Symbol) Abs[z] gives the absolute value of the real or complex number z.
Complex
(Built-in Mathematica Symbol) Complex is the head used for complex numbers.