CoefficientList[poly, var] gives a list of coefficients of powers of var in poly, starting with power 0. CoefficientList[poly, {var_1, var_2, ...}] gives an array of ...
Diagonal[m] gives the list of elements on the leading diagonal of the matrix m.Diagonal[m, k] gives the elements on the k\[Null]^th diagonal of m.
TracePrint[expr] prints all expressions used in the evaluation of expr. TracePrint[expr, form] includes only those expressions which match form. TracePrint[expr, s] includes ...
FreeQ
(Built-in Mathematica Symbol) FreeQ[expr, form] yields True if no subexpression in expr matches form, and yields False otherwise. FreeQ[expr, form, levelspec] tests only those parts of expr on levels ...
$System
(Built-in Mathematica Symbol) $System is a string describing the type of computer system on which Mathematica is being run.
Mathematica supports all standard raster audio formats and codecs, with options to allow detailed control over encoding and compression. Mathematica also allows conversion ...
InString[n] is a global object that is assigned to be the text of the n\[Null]^th input line.
LQGRegulator[{ss, sensors, finputs}, {w, v, h}, {q, r, p}] constructs the optimal feedback regulator for the StateSpaceModel ss using noisy measurements sensors and feedback ...
Subgraph[g, {v_1, v_2, ...}] gives the subgraph of the graph g generated by the vertices v_i.Subgraph[g, {e_1, e_2, ...}] gives the subgraph generated by the edges ...
Residue
(Built-in Mathematica Symbol) Residue[expr, {z, z_0}] finds the residue of expr at the point z = z_0.