Online Algebra Calculator
Many of users do not use powerful Maxima computer algebra system for systematic work, but for ad hoc algebraic calculations – equations, functions, matrixes, etc. only. To do this job, it is not useful to download the whole application from a web site.
-- Declaration: posfun declare (f, posfun) declares f to be a positive function. is (f(x) > 0) yields true.
(%o1) true (%i2)