I am ambivalent about using either MathWorks on my iPad or iPhone and my HP Prime. As far as I’m concerned, to be a valid competitor for my attention the soluti

I am ambivalent about using either MathWorks on my iPad or iPhone and my HP Prime. As far as I’m concerned, to be a valid competitor for my attention the solution must have a Computer Algebra System (CAS). Something that can merely manipulate numbers through various forms of arithmetic is far short of what should actually be expected.