NSum (Built-in Mathematica Symbol)

NSum[f, {i, i_min, i_max}] gives a numerical approximation to the sum \[Sum]i = i_min i_max f.NSum[f, {i, i_min, i_max, di}] uses a step di in the sum.

RealDigits (Built-in Mathematica Symbol)

RealDigits[x] gives a list of the digits in the approximate real number x, together with the number of digits that are to the left of the decimal point. RealDigits[x, b] ...

RegularExpression (Built-in Mathematica Symbol)

RegularExpression["regex"] represents the generalized regular expression specified by the string " regex".

SchurDecomposition (Built-in Mathematica Symbol)

SchurDecomposition[m] yields the Schur decomposition for a numerical matrix m, given as a list {q, t} where q is an orthonormal matrix and t is a block upper-triangular ...

Options for Cells (Mathematica Tutorial)

Mathematica provides a large number of options for cells. All of these options can be accessed through the Option Inspector menu item in the front end. They can be set either ...

Structure Matrices and Convolution ... (Mathematica Tutorial)

Constructing matrices with special shapes. This creates a matrix of 0s containing a radius 4 diamond of 1s. The result is a 9×9 matrix. The size of the matrix can be ...

Transactions (DatabaseLink Tutorial)

Some database operations involve carrying out a sequence of database commands. For example, information in two different tables may need to be updated. In these cases it may ...

Introduction (C Compiler Driver Package Tutorial)

The CCompilerDriver package lets you work with C compilers that are installed on your computer. It lets you build executables, libraries, and object files from C source code. ...

Combinatorica Package (Combinatorica Package Guide)

Graph Algorithms (Combinatorica Package Guide)