Online Mathematics Site

Monday 21 March 2005 at 6:17 pm | In Articles | Post Comment

Computer algebra packages have developed dramatically over the years, Mathematica probably being the most well-known, though there are plenty of others – see for example the list at Wikipedia.

For those who just need to work out a problem there are also online resources. One well-known one is Integrator, which as its name suggests, will give indefinite integrals. It is important though to use the correct syntax required by Mathematica which powers the site, otherwise Integrator tells you \int \cos(3x)\;dx=\dfrac{3\cos x^2}{2} 😕 instead of the correct \int \text{Cos}[3x]\;dx=\dfrac{1}{3}\text{Sin}[3x].

However, I have just come across QuickMath which, although it is also powered by Mathematica, allows a more friendly input using cos(3x) rather than Cos[3x]

The site says it will do

    Algebra
    -Expand
    -Factor
    -Simplify
    -Cancel
    -Partial Fractions
    -Join Fractions    		 Equations
    -Solve
    -Plot
    -Quadratics

    Inequalities
    -Solve
    -Plot

    		 Calculus
    -Differentiate
    -Integrate

    Matrices
    -Arithmetic
    -Inverse
    -Determinant

    		 Numbers
    -Percentages
    -Scientific notation

QuickMath says it has been going in various forms since 1998. How come I haven’t seen it before? It is certainly worth investigating and it will be interesting to hear how users get on with it. Are there similar sites out there?

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