Wolfram Language & System 11.0 (2016)|Legacy Documentation
Using the latest platform-optimized code, the Wolfram Language not only delivers high-efficiency machine-precision evaluation of elementary functions, but also—using a number of original algorithms—provides the world's fastest arbitrary-precision evaluation. A sophisticated web of symbolic functions and transformations allows the Wolfram Language to perform exact numerical and algebraic operations on elementary functions—effortlessly obtaining results that in the past would have been viewed as major mathematical accomplishments.
Exp — exponential
Sqrt — square root (entered using Ctrl+@)
N — numerical evaluation to any precision
FunctionExpand — expand in terms of simpler functions or smaller arguments
FullSimplify — apply full symbolic simplification
Series — series expansion