Thanks. On 2/7/07, Martin Albrecht <[EMAIL PROTECTED]> wrote: > > On Wednesday 07 February 2007 07:32, Timothy Clemans wrote: > > Hi I would like to write functions that return equations. I would like > > to know what the preferred method in SAGE for doing so is. > > There are two ways: Implement an equation class which does what ever you want > and construct it from your function. > > If you can live with a function instead of an equation try: > > def line_two_points(a,b): > m = (b[1]-a[1])/(b[0]-a[0]) > return lambda x: m*x +(a[1]-m*a[0]) > > sage: f = line_two_points((0,0),(1,1)) > sage: f(2) > 2 > > Some stuff you may want to look up: > * http://en.wikipedia.org/wiki/Anonymous_function > * http://docs.python.org/ref/lambdas.html > * http://docs.python.org/ref/callable-types.html > * http://sage.scipy.org/sage/doc/html/prog/node14.html > > Have fun, > Martin > > > -- > name: Martin Albrecht > _pgp: http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x8EF0DC99 > _www: http://www.informatik.uni-bremen.de/~malb > _jab: [EMAIL PROTECTED] > > > > >
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