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fDesc[0] = "College Scientific Calculator 27 for Windows 98, Windows ME, Windows 2000, Windows Server 2003, Windows XP and Vista.<br /> This is a product which can be found most useful by scientists, engineers, professors, and students. <br /> The pi becomes for them a &ldquo;floating&rdquo; number with arbitrary precision. It seems strange, because 2*pi corresponds to one rotation and counting rotations is much easier then measuring 1E40 radians.<br /> This calculator follows classical approach when uncertainty of f(x) calculation is estimated by formula max|(derivative(f))|*|x*uncertainty(x)|, where maximum of function derivative is considered on interval [x-uncertainty(x), x uncertainty(x)]. Thus sin(2*pi)=0 -1E-27 and sin(2*1E20*pi)=0 -1E-7. As we see, the result&rsquo;s accuracy degrades with growth of argument, but such approach allows to preserve all trigonometry facts like sin(even number*pi x)=sin(x). Calculators with multi-precision allows to calculate sin of big argument, like 1E40, with any precision, but cannot calculate sin(1E40*pi) since they don&rsquo;t have pi.";

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