A student in my class can get very far in Sage without needing to declare variables....
sage: f(u) = u^2 sage: f(4) 16 sage: integrate(sin(u),u,2,11) cos(2) - cos(11) sage: diff(u*y,u) y sage: def g(n): ....: return n*n ....: sage: g(9) 81 When must you absolutely need to declare vars? My examples above give the impression you can avoid declaring them for a good long time. CS --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
