Manual

388 Functions and commands
delcols Given a matrix and an integer n, deletes the nth column from
the matrix and returns the result. If an interval of two integers
is used instead of a single integer, deletes all columns in the
interval and returns the result.
delcols(Matrix, Integer) or delcols(Matrix,
Intg1..Intg2)
Example:
delcols returns
delrows Given a matrix and an integer n, deletes the nth row from the
matrix and returns the result. If an interval of two integers is
used instead of a single integer, deletes all rows in the interval
and returns the result.
delrows(Matrix, Integer) or delrows(Matrix,
Intg1..Intg2)
Example:
delrows returns
deltalist Returns the list of the differences between consecutive terms in
the original list.
deltalist(Lst)
Example:
deltalist([1,4,8,9]) gives [3,4,1]
Dirac Returns the value of the Dirac delta function for a real number.
Dirac(Real)
Example:
Dirac(1) gives 0
e Enters the mathematical constant e (Euler’s number).
123
456
789
2





13
46
79
123
456
789
2..3





123