On Jul 3, 2008, at 3:13 PM, phil wrote:
> On Jul 2, 8:33 pm, "Mike Hansen" <[EMAIL PROTECTED]> wrote:
>> sage: var('x,y')
>> (x, y)
>> sage: t = x^2 + y^2
>> sage: type(t)
>> <class 'sage.calculus.calculus.SymbolicArithmetic'>
>> sage: t._operator
>> <built-in function add>
>> sage: t._operands
>> [x^2, y^2]
>> sage: t._operands[0]
>> x^2
>
> How can I do comparisons on the operator? I need to test the operator
> so that I only split on additions and subtractions. Also if it is
> subtraction, I need to negate the second term.'
Use the operator module, i.e. "t._operator is operator.add"
- Robert
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