FourierCoefficient[expr, t, n] gives the n\[Null]^th coefficient in the Fourier series expansion of expr.FourierCoefficient[expr, {t_1, t_2, ...}, {n_1, n_2, ...}] gives a ...

Environment["var"] gives the value of an operating system environment variable.

SameTest is an option whose setting gives a pairwise comparison function to determine whether expressions should be considered the same.

There will probably be times when you want to stop Mathematica in the middle of a calculation. Perhaps you realize that you asked Mathematica to do the wrong thing. Or ...

NotebookFileName[] gives the file name of the current evaluation notebook. NotebookFileName[nb] gives the file name for the notebook specified by nb.

MarginalDistribution[dist, k] represents a univariate marginal distribution of the k\[Null]^th coordinate from the multivariate distribution dist.MarginalDistribution[dist, ...

Mathematica represents vectors as lists, and never needs to distinguish between row and column cases. Vectors in Mathematica can always mix numbers and arbitrary symbolic or ...

IntegerDigits[n] gives a list of the decimal digits in the integer n. IntegerDigits[n, b] gives a list of the base b digits in the integer n. IntegerDigits[n, b, len] pads ...

LeafCount[expr] gives the total number of indivisible subexpressions in expr.

Mathematica notebooks provide a sophisticated environment for creating technical documents. But particularly if you want to merge your work with existing material in TeX, you ...