Finding lines that contain specified text. Here is a file containing some text. This returns a list of all the lines in the file containing the text is.

CountRoots[poly, x] gives the number of real roots of the polynomial poly in x.CountRoots[poly, {x, a, b}] gives the number of roots between a and b.

Permute[expr, perm] permutes the positions of the elements of expr according to the permutation perm.Permute[expr, gr] returns the list of permuted forms of expr under the ...

Whenever machine-precision numbers appear in a calculation, the whole calculation is typically done in machine precision. Mathematica will then give machine-precision numbers ...

Mathematica lets you determine the final rendered color of a 3D surface using simulated lighting, reflection, and glow. With the Glow option, you can color a 3D surface ...

Mathematica serves as a convenient and extensible environment for doing basic math. In addition to performing advanced calculations, Mathematica can also be used as a ...

Lists are central constructs in Mathematica that are used to represent collections, arrays, sets, and sequences of all kinds. Well over a thousand built-in functions ...

As well as being able to specify colors in several color spaces, Mathematica also contains a variety of predefined colors and aesthetically pleasing color spectrums. These ...

AbelianGroup[{n_1, n_2, ...}] represents the direct product of the cyclic groups of degrees n_1, n_2, ....

ClusteringComponents[array] gives an array in which each element of array is replaced by an integer index representing the cluster in which the element ...