NevilleThetaS[z, m] gives the Neville theta function \[CurlyTheta]_s (z \[VerticalSeparator] m).
BSplineCurve[{pt_1, pt_2, ...}] is a graphics primitive that represents a non-uniform rational B-spline curve with control points pt_i.
BesselJZero[n, k] represents the k\[Null]^th zero of the Bessel function J_n (x).BesselJZero[n, k, x_0] represents the k\[Null]^th zero greater than x_0.
Block
(Built-in Mathematica Symbol) Block[{x, y, ...}, expr] specifies that expr is to be evaluated with local values for the symbols x, y, .... Block[{x = x_0, ...}, expr] defines initial local values for x, ...
MathieuC[a, q, z] gives the even Mathieu function with characteristic value a and parameter q.
MathieuS[a, q, z] gives the odd Mathieu function with characteristic value a and parameter q.
PlotStyle is an option for plotting and related functions that specifies styles in which objects are to be drawn.
Rescale
(Built-in Mathematica Symbol) Rescale[x, {min, max}] gives x rescaled to run from 0 to 1 over the range min to max. Rescale[x, {min, max}, {x_min, x_max}] gives x rescaled to run from x_min to x_max over ...
RegionPlot[pred, {x, x_min, x_max}, {y, y_min, y_max}] makes a plot showing the region in which pred is True.
Cos
(Built-in Mathematica Symbol) Cos[z] gives the cosine of z.