gives the two-dimensional unit vector in the k^(th) direction.

UnitVector[n, k]
gives the n-dimensional unit vector in the k^(th) direction.

Details and OptionsDetails and Options

  • UnitVector[n, k] is a list of length n with a 1 in position k and 0s elsewhere.
  • UnitVector by default creates a vector containing exact integers.
  • The option WorkingPrecision can be used to specify the precision of vector components.
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