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.
-- Option variable: derivabbrev Default value: false
When derivabbrev is true, symbolic derivatives (that is, diff nouns) are displayed as subscripts. Otherwise, derivatives are displayed in the Leibniz notation dy/dx.

(%o1) true (%i2)
diff (exp (f(x)), x, 2);
derivabbrev: true;
'integrate (f(x, y),...
diff (exp (f(x)), x, 2);
derivabbrev: true;
'integrate (f(x, y),...