ValidationLength is an option to FindSequenceFunction and related functions that specifies the number of elements in the input sequence that should be used to validate a ...
VarianceEquivalenceTest[{data_1, data_2, ...}] tests whether the variances of the data_i are equal. VarianceEquivalenceTest[{data_1, ...}, " property"] returns the value of " ...
VarianceTest[data] tests whether the variance of the data is one. VarianceTest[{data_1, data_2}] tests whether the variances of data_1 and data_2 are ...
VectorAngle[u, v] gives the angle between the vectors u and v.
VectorPoints is an option to VectorPlot, ListVectorPlot, and related functions that determines how many field vectors to draw.
VectorQ
(Built-in Mathematica Symbol) VectorQ[expr] gives True if expr is a list or a one-dimensional SparseArray object, none of whose elements are themselves lists, and gives False otherwise. VectorQ[expr, ...
VectorScale is an option to VectorPlot, ListVectorPlot, and related functions that determines the length and arrowhead size of field vectors that are drawn.
VectorStyle is an option to VectorPlot, ListVectorPlot, and related functions that determines the style to use for drawing field vectors.
Verbatim[expr] represents expr in pattern matching, requiring that expr be matched exactly as it appears, with no substitutions for blanks or other transformations.
VerifyConvergence is an option to Sum, NSum, and similar functions that specifies whether convergence checking should be done.