CoefficientArrays[polys, vars] gives the arrays of coefficients of the variables vars in the polynomials polys.

CountRoots[poly, x] gives the number of real roots of the polynomial poly in x.CountRoots[poly, {x, a, b}] gives the number of roots between a and b.

Do[expr, {i_max}] evaluates expr i_max times. Do[expr, {i, i_max}] evaluates expr with the variable i successively taking on the values 1 through i_max (in steps of 1). ...

EdgeIndex[g, e] gives the integer index for the edge e in the graph g.

EdgeQ[g, e] yields True if e is an edge in the graph g and False otherwise.

Erfc[z] gives the complementary error function erfc(z).

GeneralizedLinearModelFit[{y_1, y_2, ...}, {f_1, f_2, ...}, x] constructs a generalized linear model of the form g -1 (\[Beta]_0 + \[Beta]_1 f_1 + \[Beta]_2 f_2 + ...) that ...

GraphicsColumn[{g_1, g_2, ...}] generates a graphic in which the g_i are laid out in a column, with g_1 above g_2, etc. GraphicsColumn[list, alignment] aligns each element ...

GraphicsRow[{g_1, g_2, ...}] generates a graphic in which the g_i are laid out in a row.GraphicsRow[list, spacing] leaves the specified spacing between successive elements.

GridLines is an option for two-dimensional graphics functions that specifies grid lines.