ArcTan
(Built-in Mathematica Symbol) ArcTan[z] gives the arc tangent tan -1 (z) of the complex number z. ArcTan[x, y] gives the arc tangent of y/x, taking into account which quadrant the point (x, y) is in.
BorderDimensions[image] gives the pixel width of uniform borders of image in the form {{left, right}, {bottom, top}}.BorderDimensions[image, t] finds borders whose pixels ...
Re
(Built-in Mathematica Symbol) Re[z] gives the real part of the complex number z.
SpheroidalJoiningFactor[n, m, \[Gamma]] gives the spheroidal joining factor with degree n and order m.
NumberFieldRootsOfUnity[a] gives the roots of unity for the field \[DoubleStruckCapitalQ][a] generated by the algebraic number a.
CUDAFourier[list] finds the discrete Fourier transform of a list of complex numbers.CUDAFourier[mem] finds the discrete Fourier transform of a CUDAMemory.
ListPlot3D[array] generates a three-dimensional plot of a surface representing an array of height values. ListPlot3D[{{x_1, y_1, z_1}, {x_2, y_2, z_2}, ...}] generates a plot ...
SparseArray[{pos_1 -> val_1, pos_2 -> val_2, ...}] yields a sparse array in which values val_i appear at positions pos_i. SparseArray[{pos_1, pos_2, ...} -> {val_1, val_2, ...
VertexCoordinates is an option to Graph and related functions that specifies the coordinates to use to place the center of vertices.
TransferFunctionPoles[tf] gives a matrix of roots of the denominators in the TransferFunctionModel object tf.