doc/linexpr.rst

   1 Linear Expression Module
   2 ========================
   3
   4
   5 This class implements linear expressions.
   6
   7     .. py:method:: coefficient(self, symbol)
   8
   9         Return the coefficient value of the given symbol.
  10
  11     .. py:method:: coefficients(self)
  12
  13         Return a list of the coefficients of an expression
  14
  15     .. py:method:: constant(self)
  16
  17         Return the constant value of an expression.
  18
  19     .. py:method:: symbols(self)
  20
  21         Return a list of symbols in an expression.
  22
  23     .. py:method:: dimension(self)
  24
  25         Return the number of vriables in an expression.
  26
  27     .. py:method:: __sub__(self, other)
  28
  29         Return the difference between two expressions.
  30
  31     .. py:method:: subs(self, symbol, expression=None)
  32
  33         Subsitute the given value into an expression and return the resulting expression.
  34
  35     .. py:method:: fromsympy(self)
  36
  37         Convert sympy object to an expression.
  38
  39     .. py:method:: tosympy(self)
  40
  41         Return an expression as a sympy object.
  42
  43 .. py:class:: Dummy(Symbol)
  44
  45 This class returns a dummy symbol to ensure that each no variables are repeated in an expression