Simplifying expressions. Mathematica does not automatically simplify an algebraic expression like this. Simplify performs the simplification.

Power series are represented in Mathematica as SeriesData objects. The power series is printed out as a sum of terms, ending with O[x] raised to a power. Internally, however, ...

Start with the expression that will be the base. Type x. Create a built-up power by pressing the Control key and the 6 key at the same time.

$SQLTimeout gives the default time in seconds that DatabaseLink waits while opening connections and executing database queries.

AddToClassPath[path_1, path_2, ...] adds the specified full paths to directories and jar or zip files to the J/Link class search path.

Fields[javaclass] returns a list of the Java declarations for all fields of the specified JavaClass. Fields["classname"] lists the fields for the named class. ...

Methods[javaclass] returns a list of the Java declarations for all methods of the specified JavaClass. Methods["classname"] lists the methods for the named class. ...

UninstallJava[] shuts down the Java runtime that was started by InstallJava.

$RelaxedTypeChecking is a flag that can be set to True to speed up the validation performed in Mathematica (via pattern tests) on arrays of data being sent as arguments to ...

int MTensor_setMTensor (MTensor t, MTensor val, mint*pos, mint numpos) sets a subtensor element in an MTensor.