InverseSeries[s] takes the series s, and gives a series for the inverse of the function represented by s. InverseSeries[s, x] uses the variable x in the inverse series.

IsolatingInterval[a] gives a rational isolating interval for the algebraic number a.IsolatingInterval[a, dx] gives an isolating interval of width at most dx.

JoinForm[type] is a graphics directive that specifies what type of joins should be used to connect segments of lines, tubes, edges, and related primitives.

LabelingFunction is an option for charting functions that specifies a function to apply to determine labeling of chart elements.

LinkConnect["name"] connects to a MathLink link created by another program.

LoopFreeGraphQ[g] yields True if the graph g has no self-loops, and False otherwise.

LowerTriangularize[m] gives a matrix in which all but the lower triangular elements of m are replaced with zeros. LowerTriangularize[m, k] replaces with zeros only the ...

MapAll[f, expr] or f //@ expr applies f to every subexpression in expr.

MathieuCharacteristicB[r, q] gives the characteristic value b_r for odd Mathieu functions with characteristic exponent r and parameter q.

MatrixPlot[m] generates a plot that gives a visual representation of the values of elements in a matrix.