Package Scientific :: Package Functions :: Module FirstDerivatives :: Class DerivVar

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Class DerivVar

Numerical variable with automatic derivatives of first order

Instance Methods

__abs__(self)

__add__(self, other)

__cmp__(self, other)

__coerce__(self, other)

__div__(self, other)

list

__getitem__(self, order)
Returns: a list of all derivatives of the given order

__init__(self, value, index=0, order=1)

__mul__(self, other)

__neg__(self)

__nonzero__(self)

__pos__(self)

__pow__(self, other, z=None)

__radd__(self, other)

__rdiv__(self, other)

__repr__(self)

__rmul__(self, other)

__rpow__(self, other)

__rsub__(self, other)

__str__(self)

__sub__(self, other)

arccos(self)

arcsin(self)

arctan(self)

arctan2(self, other)

cos(self)

cosh(self)

exp(self)

gamma(self)

log(self)

log10(self)

sign(self)

sin(self)

sinh(self)

sqrt(self)

tan(self)

tanh(self)

Method Details

getitem(self, order)
(Indexing operator)

Parameters:

order (int) - derivative order

Returns: list

a list of all derivatives of the given order

Raises:

ValueError - if order < 0 or order > 1

init(self, value, index=0, order=1)
(Constructor)

Parameters:

value (number) - the numerical value of the variable
index (int) - the variable index, which serves to distinguish between variables and as an index for the derivative lists. Each explicitly created instance of DerivVar must have a unique index.
order (int) - the derivative order, must be zero or one

Raises:

ValueError - if order < 0 or order > 1

Class DerivVar

__getitem__(self, order) (Indexing operator)

__init__(self, value, index=0, order=1) (Constructor)

getitem(self, order)
(Indexing operator)

init(self, value, index=0, order=1)
(Constructor)